/* vsprintf with automatic memory allocation.
- Copyright (C) 1999, 2002-2007 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2002-2014 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
/* This file can be parametrized with the following macros:
VASNPRINTF The name of the function being defined.
# endif
#endif
-#include <locale.h> /* localeconv() */
-#include <stdio.h> /* snprintf(), sprintf() */
-#include <stdlib.h> /* abort(), malloc(), realloc(), free() */
-#include <string.h> /* memcpy(), strlen() */
-#include <errno.h> /* errno */
-#include <limits.h> /* CHAR_BIT */
-#include <float.h> /* DBL_MAX_EXP, LDBL_MAX_EXP */
+#include <locale.h> /* localeconv() */
+#include <stdio.h> /* snprintf(), sprintf() */
+#include <stdlib.h> /* abort(), malloc(), realloc(), free() */
+#include <string.h> /* memcpy(), strlen() */
+#include <errno.h> /* errno */
+#include <limits.h> /* CHAR_BIT */
+#include <float.h> /* DBL_MAX_EXP, LDBL_MAX_EXP */
#if HAVE_NL_LANGINFO
# include <langinfo.h>
#endif
/* Checked size_t computations. */
#include "xsize.h"
-#if NEED_PRINTF_LONG_DOUBLE && !defined IN_LIBINTL
+#include "verify.h"
+
+#if (NEED_PRINTF_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
# include <math.h>
# include "float+.h"
-# include "fpucw.h"
#endif
-#if NEED_PRINTF_INFINITE_DOUBLE && !defined IN_LIBINTL
+#if (NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
# include <math.h>
-# include "isnan.h"
+# include "isnand-nolibm.h"
#endif
-#if NEED_PRINTF_INFINITE_LONG_DOUBLE && !defined IN_LIBINTL
+#if (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE) && !defined IN_LIBINTL
# include <math.h>
# include "isnanl-nolibm.h"
# include "fpucw.h"
#endif
-#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
# include <math.h>
-# include "isnan.h"
+# include "isnand-nolibm.h"
# include "printf-frexp.h"
+#endif
+
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
+# include <math.h>
# include "isnanl-nolibm.h"
# include "printf-frexpl.h"
# include "fpucw.h"
#endif
-/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW. */
-#ifndef EOVERFLOW
-# define EOVERFLOW E2BIG
-#endif
-
-#if HAVE_WCHAR_T
-# if HAVE_WCSLEN
-# define local_wcslen wcslen
-# else
- /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
- a dependency towards this library, here is a local substitute.
- Define this substitute only once, even if this file is included
- twice in the same compilation unit. */
-# ifndef local_wcslen_defined
-# define local_wcslen_defined 1
-static size_t
-local_wcslen (const wchar_t *s)
-{
- const wchar_t *ptr;
-
- for (ptr = s; *ptr != (wchar_t) 0; ptr++)
- ;
- return ptr - s;
-}
-# endif
-# endif
-#endif
-
/* Default parameters. */
#ifndef VASNPRINTF
# if WIDE_CHAR_VERSION
# define DIRECTIVES wchar_t_directives
# define PRINTF_PARSE wprintf_parse
# define DCHAR_CPY wmemcpy
+# define DCHAR_SET wmemset
# else
# define VASNPRINTF vasnprintf
# define FCHAR_T char
# define DIRECTIVES char_directives
# define PRINTF_PARSE printf_parse
# define DCHAR_CPY memcpy
+# define DCHAR_SET memset
# endif
#endif
#if WIDE_CHAR_VERSION
# define USE_SNPRINTF 1
# if HAVE_DECL__SNWPRINTF
/* On Windows, the function swprintf() has a different signature than
- on Unix; we use the _snwprintf() function instead. */
-# define SNPRINTF _snwprintf
+ on Unix; we use the function _snwprintf() or - on mingw - snwprintf()
+ instead. The mingw function snwprintf() has fewer bugs than the
+ MSVCRT function _snwprintf(), so prefer that. */
+# if defined __MINGW32__
+# define SNPRINTF snwprintf
+# else
+# define SNPRINTF _snwprintf
+# endif
# else
/* Unix. */
# define SNPRINTF swprintf
# endif
#else
/* TCHAR_T is char. */
-# /* Use snprintf if it exists under the name 'snprintf' or '_snprintf'.
+ /* Use snprintf if it exists under the name 'snprintf' or '_snprintf'.
But don't use it on BeOS, since BeOS snprintf produces no output if the
- size argument is >= 0x3000000. */
-# if (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF) && !defined __BEOS__
+ size argument is >= 0x3000000.
+ Also don't use it on Linux libc5, since there snprintf with size = 1
+ writes any output without bounds, like sprintf. */
+# if (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF) && !defined __BEOS__ && !(__GNU_LIBRARY__ == 1)
# define USE_SNPRINTF 1
# else
# define USE_SNPRINTF 0
# endif
# if HAVE_DECL__SNPRINTF
- /* Windows. */
-# define SNPRINTF _snprintf
+ /* Windows. The mingw function snprintf() has fewer bugs than the MSVCRT
+ function _snprintf(), so prefer that. */
+# if defined __MINGW32__
+# define SNPRINTF snprintf
+ /* Here we need to call the native snprintf, not rpl_snprintf. */
+# undef snprintf
+# else
+# define SNPRINTF _snprintf
+# endif
# else
/* Unix. */
# define SNPRINTF snprintf
/* Here we need to call the native sprintf, not rpl_sprintf. */
#undef sprintf
-#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
+/* GCC >= 4.0 with -Wall emits unjustified "... may be used uninitialized"
+ warnings in this file. Use -Dlint to suppress them. */
+#ifdef lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
+/* Avoid some warnings from "gcc -Wshadow".
+ This file doesn't use the exp() and remainder() functions. */
+#undef exp
+#define exp expo
+#undef remainder
+#define remainder rem
+
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && !WIDE_CHAR_VERSION
+# if (HAVE_STRNLEN && !defined _AIX)
+# define local_strnlen strnlen
+# else
+# ifndef local_strnlen_defined
+# define local_strnlen_defined 1
+static size_t
+local_strnlen (const char *string, size_t maxlen)
+{
+ const char *end = memchr (string, '\0', maxlen);
+ return end ? (size_t) (end - string) : maxlen;
+}
+# endif
+# endif
+#endif
+
+#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
+# if HAVE_WCSLEN
+# define local_wcslen wcslen
+# else
+ /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
+ a dependency towards this library, here is a local substitute.
+ Define this substitute only once, even if this file is included
+ twice in the same compilation unit. */
+# ifndef local_wcslen_defined
+# define local_wcslen_defined 1
+static size_t
+local_wcslen (const wchar_t *s)
+{
+ const wchar_t *ptr;
+
+ for (ptr = s; *ptr != (wchar_t) 0; ptr++)
+ ;
+ return ptr - s;
+}
+# endif
+# endif
+#endif
+
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+# if HAVE_WCSNLEN
+# define local_wcsnlen wcsnlen
+# else
+# ifndef local_wcsnlen_defined
+# define local_wcsnlen_defined 1
+static size_t
+local_wcsnlen (const wchar_t *s, size_t maxlen)
+{
+ const wchar_t *ptr;
+
+ for (ptr = s; maxlen > 0 && *ptr != (wchar_t) 0; ptr++, maxlen--)
+ ;
+ return ptr - s;
+}
+# endif
+# endif
+#endif
+
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && !defined IN_LIBINTL
/* Determine the decimal-point character according to the current locale. */
# ifndef decimal_point_char_defined
# define decimal_point_char_defined 1
static char
-decimal_point_char ()
+decimal_point_char (void)
{
const char *point;
/* Determine it in a multithread-safe way. We know nl_langinfo is
- multithread-safe on glibc systems, but is not required to be multithread-
- safe by POSIX. sprintf(), however, is multithread-safe. localeconv()
- is rarely multithread-safe. */
-# if HAVE_NL_LANGINFO && __GLIBC__
+ multithread-safe on glibc systems and Mac OS X systems, but is not required
+ to be multithread-safe by POSIX. sprintf(), however, is multithread-safe.
+ localeconv() is rarely multithread-safe. */
+# if HAVE_NL_LANGINFO && (__GLIBC__ || defined __UCLIBC__ || (defined __APPLE__ && defined __MACH__))
point = nl_langinfo (RADIXCHAR);
# elif 1
char pointbuf[5];
# endif
#endif
-#if NEED_PRINTF_INFINITE_DOUBLE && !defined IN_LIBINTL
+#if NEED_PRINTF_INFINITE_DOUBLE && !NEED_PRINTF_DOUBLE && !defined IN_LIBINTL
/* Equivalent to !isfinite(x) || x == 0, but does not require libm. */
static int
is_infinite_or_zero (double x)
{
- return isnan (x) || x + x == x;
+ return isnand (x) || x + x == x;
}
#endif
-#if NEED_PRINTF_INFINITE_LONG_DOUBLE && !defined IN_LIBINTL
+#if NEED_PRINTF_INFINITE_LONG_DOUBLE && !NEED_PRINTF_LONG_DOUBLE && !defined IN_LIBINTL
-/* Equivalent to !isfinite(x), but does not require libm. */
+/* Equivalent to !isfinite(x) || x == 0, but does not require libm. */
static int
-is_infinitel (long double x)
+is_infinite_or_zerol (long double x)
{
- return isnanl (x) || (x + x == x && x != 0.0L);
+ return isnanl (x) || x + x == x;
}
#endif
-#if NEED_PRINTF_LONG_DOUBLE && !defined IN_LIBINTL
+#if (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
/* Converting 'long double' to decimal without rare rounding bugs requires
real bignums. We use the naming conventions of GNU gmp, but vastly simpler
typedef unsigned int mp_limb_t;
# define GMP_LIMB_BITS 32
-typedef int mp_limb_verify[2 * (sizeof (mp_limb_t) * CHAR_BIT == GMP_LIMB_BITS) - 1];
+verify (sizeof (mp_limb_t) * CHAR_BIT == GMP_LIMB_BITS);
typedef unsigned long long mp_twolimb_t;
# define GMP_TWOLIMB_BITS 64
-typedef int mp_twolimb_verify[2 * (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS) - 1];
+verify (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);
/* Representation of a bignum >= 0. */
typedef struct
dlen = len1 + len2;
dp = (mp_limb_t *) malloc (dlen * sizeof (mp_limb_t));
if (dp == NULL)
- return NULL;
+ return NULL;
for (k = len2; k > 0; )
- dp[--k] = 0;
+ dp[--k] = 0;
for (i = 0; i < len1; i++)
- {
- mp_limb_t digit1 = p1[i];
- mp_twolimb_t carry = 0;
- for (j = 0; j < len2; j++)
- {
- mp_limb_t digit2 = p2[j];
- carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
- carry += dp[i + j];
- dp[i + j] = (mp_limb_t) carry;
- carry = carry >> GMP_LIMB_BITS;
- }
- dp[i + len2] = (mp_limb_t) carry;
- }
+ {
+ mp_limb_t digit1 = p1[i];
+ mp_twolimb_t carry = 0;
+ for (j = 0; j < len2; j++)
+ {
+ mp_limb_t digit2 = p2[j];
+ carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
+ carry += dp[i + j];
+ dp[i + j] = (mp_limb_t) carry;
+ carry = carry >> GMP_LIMB_BITS;
+ }
+ dp[i + len2] = (mp_limb_t) carry;
+ }
/* Normalise. */
while (dlen > 0 && dp[dlen - 1] == 0)
- dlen--;
+ dlen--;
dest->nlimbs = dlen;
dest->limbs = dp;
}
Normalise [q[m-1],...,q[0]], yields q.
If m>=n>1, perform a multiple-precision division:
We have a/b < beta^(m-n+1).
- s:=intDsize-1-(hightest bit in b[n-1]), 0<=s<intDsize.
+ s:=intDsize-1-(highest bit in b[n-1]), 0<=s<intDsize.
Shift a and b left by s bits, copying them. r:=a.
r=[r[m],...,r[0]], b=[b[n-1],...,b[0]] with b[n-1]>=beta/2.
For j=m-n,...,0: {Here 0 <= r < b*beta^(j+1).}
for (;;)
{
if (b_len == 0)
- /* Division by zero. */
- abort ();
+ /* Division by zero. */
+ abort ();
if (b_ptr[b_len - 1] == 0)
- b_len--;
+ b_len--;
else
- break;
+ break;
}
/* Here m = a_len >= 0 and n = b_len > 0. */
else if (b_len == 1)
{
/* n=1: single precision division.
- beta^(m-1) <= a < beta^m ==> beta^(m-2) <= a/b < beta^m */
+ beta^(m-1) <= a < beta^m ==> beta^(m-2) <= a/b < beta^m */
r_ptr = roomptr;
q_ptr = roomptr + 1;
{
- mp_limb_t den = b_ptr[0];
- mp_limb_t remainder = 0;
- const mp_limb_t *sourceptr = a_ptr + a_len;
- mp_limb_t *destptr = q_ptr + a_len;
- size_t count;
- for (count = a_len; count > 0; count--)
- {
- mp_twolimb_t num =
- ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--sourceptr;
- *--destptr = num / den;
- remainder = num % den;
- }
- /* Normalise and store r. */
- if (remainder > 0)
- {
- r_ptr[0] = remainder;
- r_len = 1;
- }
- else
- r_len = 0;
- /* Normalise q. */
- q_len = a_len;
- if (q_ptr[q_len - 1] == 0)
- q_len--;
+ mp_limb_t den = b_ptr[0];
+ mp_limb_t remainder = 0;
+ const mp_limb_t *sourceptr = a_ptr + a_len;
+ mp_limb_t *destptr = q_ptr + a_len;
+ size_t count;
+ for (count = a_len; count > 0; count--)
+ {
+ mp_twolimb_t num =
+ ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--sourceptr;
+ *--destptr = num / den;
+ remainder = num % den;
+ }
+ /* Normalise and store r. */
+ if (remainder > 0)
+ {
+ r_ptr[0] = remainder;
+ r_len = 1;
+ }
+ else
+ r_len = 0;
+ /* Normalise q. */
+ q_len = a_len;
+ if (q_ptr[q_len - 1] == 0)
+ q_len--;
}
}
else
{
/* n>1: multiple precision division.
- beta^(m-1) <= a < beta^m, beta^(n-1) <= b < beta^n ==>
- beta^(m-n-1) <= a/b < beta^(m-n+1). */
+ beta^(m-1) <= a < beta^m, beta^(n-1) <= b < beta^n ==>
+ beta^(m-n-1) <= a/b < beta^(m-n+1). */
/* Determine s. */
size_t s;
{
- mp_limb_t msd = b_ptr[b_len - 1]; /* = b[n-1], > 0 */
- s = 31;
- if (msd >= 0x10000)
- {
- msd = msd >> 16;
- s -= 16;
- }
- if (msd >= 0x100)
- {
- msd = msd >> 8;
- s -= 8;
- }
- if (msd >= 0x10)
- {
- msd = msd >> 4;
- s -= 4;
- }
- if (msd >= 0x4)
- {
- msd = msd >> 2;
- s -= 2;
- }
- if (msd >= 0x2)
- {
- msd = msd >> 1;
- s -= 1;
- }
+ mp_limb_t msd = b_ptr[b_len - 1]; /* = b[n-1], > 0 */
+ /* Determine s = GMP_LIMB_BITS - integer_length (msd).
+ Code copied from gnulib's integer_length.c. */
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+ s = __builtin_clz (msd);
+# else
+# if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
+ if (GMP_LIMB_BITS <= DBL_MANT_BIT)
+ {
+ /* Use 'double' operations.
+ Assumes an IEEE 754 'double' implementation. */
+# define DBL_EXP_MASK ((DBL_MAX_EXP - DBL_MIN_EXP) | 7)
+# define DBL_EXP_BIAS (DBL_EXP_MASK / 2 - 1)
+# define NWORDS \
+ ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+ union { double value; unsigned int word[NWORDS]; } m;
+
+ /* Use a single integer to floating-point conversion. */
+ m.value = msd;
+
+ s = GMP_LIMB_BITS
+ - (((m.word[DBL_EXPBIT0_WORD] >> DBL_EXPBIT0_BIT) & DBL_EXP_MASK)
+ - DBL_EXP_BIAS);
+ }
+ else
+# undef NWORDS
+# endif
+ {
+ s = 31;
+ if (msd >= 0x10000)
+ {
+ msd = msd >> 16;
+ s -= 16;
+ }
+ if (msd >= 0x100)
+ {
+ msd = msd >> 8;
+ s -= 8;
+ }
+ if (msd >= 0x10)
+ {
+ msd = msd >> 4;
+ s -= 4;
+ }
+ if (msd >= 0x4)
+ {
+ msd = msd >> 2;
+ s -= 2;
+ }
+ if (msd >= 0x2)
+ {
+ msd = msd >> 1;
+ s -= 1;
+ }
+ }
+# endif
}
/* 0 <= s < GMP_LIMB_BITS.
- Copy b, shifting it left by s bits. */
+ Copy b, shifting it left by s bits. */
if (s > 0)
- {
- tmp_roomptr = (mp_limb_t *) malloc (b_len * sizeof (mp_limb_t));
- if (tmp_roomptr == NULL)
- {
- free (roomptr);
- return NULL;
- }
- {
- const mp_limb_t *sourceptr = b_ptr;
- mp_limb_t *destptr = tmp_roomptr;
- mp_twolimb_t accu = 0;
- size_t count;
- for (count = b_len; count > 0; count--)
- {
- accu += (mp_twolimb_t) *sourceptr++ << s;
- *destptr++ = (mp_limb_t) accu;
- accu = accu >> GMP_LIMB_BITS;
- }
- /* accu must be zero, since that was how s was determined. */
- if (accu != 0)
- abort ();
- }
- b_ptr = tmp_roomptr;
- }
+ {
+ tmp_roomptr = (mp_limb_t *) malloc (b_len * sizeof (mp_limb_t));
+ if (tmp_roomptr == NULL)
+ {
+ free (roomptr);
+ return NULL;
+ }
+ {
+ const mp_limb_t *sourceptr = b_ptr;
+ mp_limb_t *destptr = tmp_roomptr;
+ mp_twolimb_t accu = 0;
+ size_t count;
+ for (count = b_len; count > 0; count--)
+ {
+ accu += (mp_twolimb_t) *sourceptr++ << s;
+ *destptr++ = (mp_limb_t) accu;
+ accu = accu >> GMP_LIMB_BITS;
+ }
+ /* accu must be zero, since that was how s was determined. */
+ if (accu != 0)
+ abort ();
+ }
+ b_ptr = tmp_roomptr;
+ }
/* Copy a, shifting it left by s bits, yields r.
- Memory layout:
- At the beginning: r = roomptr[0..a_len],
- at the end: r = roomptr[0..b_len-1], q = roomptr[b_len..a_len] */
+ Memory layout:
+ At the beginning: r = roomptr[0..a_len],
+ at the end: r = roomptr[0..b_len-1], q = roomptr[b_len..a_len] */
r_ptr = roomptr;
if (s == 0)
- {
- memcpy (r_ptr, a_ptr, a_len * sizeof (mp_limb_t));
- r_ptr[a_len] = 0;
- }
+ {
+ memcpy (r_ptr, a_ptr, a_len * sizeof (mp_limb_t));
+ r_ptr[a_len] = 0;
+ }
else
- {
- const mp_limb_t *sourceptr = a_ptr;
- mp_limb_t *destptr = r_ptr;
- mp_twolimb_t accu = 0;
- size_t count;
- for (count = a_len; count > 0; count--)
- {
- accu += (mp_twolimb_t) *sourceptr++ << s;
- *destptr++ = (mp_limb_t) accu;
- accu = accu >> GMP_LIMB_BITS;
- }
- *destptr++ = (mp_limb_t) accu;
- }
+ {
+ const mp_limb_t *sourceptr = a_ptr;
+ mp_limb_t *destptr = r_ptr;
+ mp_twolimb_t accu = 0;
+ size_t count;
+ for (count = a_len; count > 0; count--)
+ {
+ accu += (mp_twolimb_t) *sourceptr++ << s;
+ *destptr++ = (mp_limb_t) accu;
+ accu = accu >> GMP_LIMB_BITS;
+ }
+ *destptr++ = (mp_limb_t) accu;
+ }
q_ptr = roomptr + b_len;
q_len = a_len - b_len + 1; /* q will have m-n+1 limbs */
{
- size_t j = a_len - b_len; /* m-n */
- mp_limb_t b_msd = b_ptr[b_len - 1]; /* b[n-1] */
- mp_limb_t b_2msd = b_ptr[b_len - 2]; /* b[n-2] */
- mp_twolimb_t b_msdd = /* b[n-1]*beta+b[n-2] */
- ((mp_twolimb_t) b_msd << GMP_LIMB_BITS) | b_2msd;
- /* Division loop, traversed m-n+1 times.
- j counts down, b is unchanged, beta/2 <= b[n-1] < beta. */
- for (;;)
- {
- mp_limb_t q_star;
- mp_limb_t c1;
- if (r_ptr[j + b_len] < b_msd) /* r[j+n] < b[n-1] ? */
- {
- /* Divide r[j+n]*beta+r[j+n-1] by b[n-1], no overflow. */
- mp_twolimb_t num =
- ((mp_twolimb_t) r_ptr[j + b_len] << GMP_LIMB_BITS)
- | r_ptr[j + b_len - 1];
- q_star = num / b_msd;
- c1 = num % b_msd;
- }
- else
- {
- /* Overflow, hence r[j+n]*beta+r[j+n-1] >= beta*b[n-1]. */
- q_star = (mp_limb_t)~(mp_limb_t)0; /* q* = beta-1 */
- /* Test whether r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] >= beta
- <==> r[j+n]*beta+r[j+n-1] + b[n-1] >= beta*b[n-1]+beta
- <==> b[n-1] < floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta)
- {<= beta !}.
- If yes, jump directly to the subtraction loop.
- (Otherwise, r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] < beta
- <==> floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta) = b[n-1] ) */
- if (r_ptr[j + b_len] > b_msd
- || (c1 = r_ptr[j + b_len - 1] + b_msd) < b_msd)
- /* r[j+n] >= b[n-1]+1 or
- r[j+n] = b[n-1] and the addition r[j+n-1]+b[n-1] gives a
- carry. */
- goto subtract;
- }
- /* q_star = q*,
- c1 = (r[j+n]*beta+r[j+n-1]) - q* * b[n-1] (>=0, <beta). */
- {
- mp_twolimb_t c2 = /* c1*beta+r[j+n-2] */
- ((mp_twolimb_t) c1 << GMP_LIMB_BITS) | r_ptr[j + b_len - 2];
- mp_twolimb_t c3 = /* b[n-2] * q* */
- (mp_twolimb_t) b_2msd * (mp_twolimb_t) q_star;
- /* While c2 < c3, increase c2 and decrease c3.
- Consider c3-c2. While it is > 0, decrease it by
- b[n-1]*beta+b[n-2]. Because of b[n-1]*beta+b[n-2] >= beta^2/2
- this can happen only twice. */
- if (c3 > c2)
- {
- q_star = q_star - 1; /* q* := q* - 1 */
- if (c3 - c2 > b_msdd)
- q_star = q_star - 1; /* q* := q* - 1 */
- }
- }
- if (q_star > 0)
- subtract:
- {
- /* Subtract r := r - b * q* * beta^j. */
- mp_limb_t cr;
- {
- const mp_limb_t *sourceptr = b_ptr;
- mp_limb_t *destptr = r_ptr + j;
- mp_twolimb_t carry = 0;
- size_t count;
- for (count = b_len; count > 0; count--)
- {
- /* Here 0 <= carry <= q*. */
- carry =
- carry
- + (mp_twolimb_t) q_star * (mp_twolimb_t) *sourceptr++
- + (mp_limb_t) ~(*destptr);
- /* Here 0 <= carry <= beta*q* + beta-1. */
- *destptr++ = ~(mp_limb_t) carry;
- carry = carry >> GMP_LIMB_BITS; /* <= q* */
- }
- cr = (mp_limb_t) carry;
- }
- /* Subtract cr from r_ptr[j + b_len], then forget about
- r_ptr[j + b_len]. */
- if (cr > r_ptr[j + b_len])
- {
- /* Subtraction gave a carry. */
- q_star = q_star - 1; /* q* := q* - 1 */
- /* Add b back. */
- {
- const mp_limb_t *sourceptr = b_ptr;
- mp_limb_t *destptr = r_ptr + j;
- mp_limb_t carry = 0;
- size_t count;
- for (count = b_len; count > 0; count--)
- {
- mp_limb_t source1 = *sourceptr++;
- mp_limb_t source2 = *destptr;
- *destptr++ = source1 + source2 + carry;
- carry =
- (carry
- ? source1 >= (mp_limb_t) ~source2
- : source1 > (mp_limb_t) ~source2);
- }
- }
- /* Forget about the carry and about r[j+n]. */
- }
- }
- /* q* is determined. Store it as q[j]. */
- q_ptr[j] = q_star;
- if (j == 0)
- break;
- j--;
- }
+ size_t j = a_len - b_len; /* m-n */
+ mp_limb_t b_msd = b_ptr[b_len - 1]; /* b[n-1] */
+ mp_limb_t b_2msd = b_ptr[b_len - 2]; /* b[n-2] */
+ mp_twolimb_t b_msdd = /* b[n-1]*beta+b[n-2] */
+ ((mp_twolimb_t) b_msd << GMP_LIMB_BITS) | b_2msd;
+ /* Division loop, traversed m-n+1 times.
+ j counts down, b is unchanged, beta/2 <= b[n-1] < beta. */
+ for (;;)
+ {
+ mp_limb_t q_star;
+ mp_limb_t c1;
+ if (r_ptr[j + b_len] < b_msd) /* r[j+n] < b[n-1] ? */
+ {
+ /* Divide r[j+n]*beta+r[j+n-1] by b[n-1], no overflow. */
+ mp_twolimb_t num =
+ ((mp_twolimb_t) r_ptr[j + b_len] << GMP_LIMB_BITS)
+ | r_ptr[j + b_len - 1];
+ q_star = num / b_msd;
+ c1 = num % b_msd;
+ }
+ else
+ {
+ /* Overflow, hence r[j+n]*beta+r[j+n-1] >= beta*b[n-1]. */
+ q_star = (mp_limb_t)~(mp_limb_t)0; /* q* = beta-1 */
+ /* Test whether r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] >= beta
+ <==> r[j+n]*beta+r[j+n-1] + b[n-1] >= beta*b[n-1]+beta
+ <==> b[n-1] < floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta)
+ {<= beta !}.
+ If yes, jump directly to the subtraction loop.
+ (Otherwise, r[j+n]*beta+r[j+n-1] - (beta-1)*b[n-1] < beta
+ <==> floor((r[j+n]*beta+r[j+n-1]+b[n-1])/beta) = b[n-1] ) */
+ if (r_ptr[j + b_len] > b_msd
+ || (c1 = r_ptr[j + b_len - 1] + b_msd) < b_msd)
+ /* r[j+n] >= b[n-1]+1 or
+ r[j+n] = b[n-1] and the addition r[j+n-1]+b[n-1] gives a
+ carry. */
+ goto subtract;
+ }
+ /* q_star = q*,
+ c1 = (r[j+n]*beta+r[j+n-1]) - q* * b[n-1] (>=0, <beta). */
+ {
+ mp_twolimb_t c2 = /* c1*beta+r[j+n-2] */
+ ((mp_twolimb_t) c1 << GMP_LIMB_BITS) | r_ptr[j + b_len - 2];
+ mp_twolimb_t c3 = /* b[n-2] * q* */
+ (mp_twolimb_t) b_2msd * (mp_twolimb_t) q_star;
+ /* While c2 < c3, increase c2 and decrease c3.
+ Consider c3-c2. While it is > 0, decrease it by
+ b[n-1]*beta+b[n-2]. Because of b[n-1]*beta+b[n-2] >= beta^2/2
+ this can happen only twice. */
+ if (c3 > c2)
+ {
+ q_star = q_star - 1; /* q* := q* - 1 */
+ if (c3 - c2 > b_msdd)
+ q_star = q_star - 1; /* q* := q* - 1 */
+ }
+ }
+ if (q_star > 0)
+ subtract:
+ {
+ /* Subtract r := r - b * q* * beta^j. */
+ mp_limb_t cr;
+ {
+ const mp_limb_t *sourceptr = b_ptr;
+ mp_limb_t *destptr = r_ptr + j;
+ mp_twolimb_t carry = 0;
+ size_t count;
+ for (count = b_len; count > 0; count--)
+ {
+ /* Here 0 <= carry <= q*. */
+ carry =
+ carry
+ + (mp_twolimb_t) q_star * (mp_twolimb_t) *sourceptr++
+ + (mp_limb_t) ~(*destptr);
+ /* Here 0 <= carry <= beta*q* + beta-1. */
+ *destptr++ = ~(mp_limb_t) carry;
+ carry = carry >> GMP_LIMB_BITS; /* <= q* */
+ }
+ cr = (mp_limb_t) carry;
+ }
+ /* Subtract cr from r_ptr[j + b_len], then forget about
+ r_ptr[j + b_len]. */
+ if (cr > r_ptr[j + b_len])
+ {
+ /* Subtraction gave a carry. */
+ q_star = q_star - 1; /* q* := q* - 1 */
+ /* Add b back. */
+ {
+ const mp_limb_t *sourceptr = b_ptr;
+ mp_limb_t *destptr = r_ptr + j;
+ mp_limb_t carry = 0;
+ size_t count;
+ for (count = b_len; count > 0; count--)
+ {
+ mp_limb_t source1 = *sourceptr++;
+ mp_limb_t source2 = *destptr;
+ *destptr++ = source1 + source2 + carry;
+ carry =
+ (carry
+ ? source1 >= (mp_limb_t) ~source2
+ : source1 > (mp_limb_t) ~source2);
+ }
+ }
+ /* Forget about the carry and about r[j+n]. */
+ }
+ }
+ /* q* is determined. Store it as q[j]. */
+ q_ptr[j] = q_star;
+ if (j == 0)
+ break;
+ j--;
+ }
}
r_len = b_len;
/* Normalise q. */
if (q_ptr[q_len - 1] == 0)
- q_len--;
+ q_len--;
# if 0 /* Not needed here, since we need r only to compare it with b/2, and
- b is shifted left by s bits. */
+ b is shifted left by s bits. */
/* Shift r right by s bits. */
if (s > 0)
- {
- mp_limb_t ptr = r_ptr + r_len;
- mp_twolimb_t accu = 0;
- size_t count;
- for (count = r_len; count > 0; count--)
- {
- accu = (mp_twolimb_t) (mp_limb_t) accu << GMP_LIMB_BITS;
- accu += (mp_twolimb_t) *--ptr << (GMP_LIMB_BITS - s);
- *ptr = (mp_limb_t) (accu >> GMP_LIMB_BITS);
- }
- }
+ {
+ mp_limb_t ptr = r_ptr + r_len;
+ mp_twolimb_t accu = 0;
+ size_t count;
+ for (count = r_len; count > 0; count--)
+ {
+ accu = (mp_twolimb_t) (mp_limb_t) accu << GMP_LIMB_BITS;
+ accu += (mp_twolimb_t) *--ptr << (GMP_LIMB_BITS - s);
+ *ptr = (mp_limb_t) (accu >> GMP_LIMB_BITS);
+ }
+ }
# endif
/* Normalise r. */
while (r_len > 0 && r_ptr[r_len - 1] == 0)
- r_len--;
+ r_len--;
}
/* Compare r << 1 with b. */
if (r_len > b_len)
size_t i;
for (i = b_len;;)
{
- mp_limb_t r_i =
- (i <= r_len && i > 0 ? r_ptr[i - 1] >> (GMP_LIMB_BITS - 1) : 0)
- | (i < r_len ? r_ptr[i] << 1 : 0);
- mp_limb_t b_i = (i < b_len ? b_ptr[i] : 0);
- if (r_i > b_i)
- goto increment_q;
- if (r_i < b_i)
- goto keep_q;
- if (i == 0)
- break;
- i--;
+ mp_limb_t r_i =
+ (i <= r_len && i > 0 ? r_ptr[i - 1] >> (GMP_LIMB_BITS - 1) : 0)
+ | (i < r_len ? r_ptr[i] << 1 : 0);
+ mp_limb_t b_i = (i < b_len ? b_ptr[i] : 0);
+ if (r_i > b_i)
+ goto increment_q;
+ if (r_i < b_i)
+ goto keep_q;
+ if (i == 0)
+ break;
+ i--;
}
}
if (q_len > 0 && ((q_ptr[0] & 1) != 0))
{
size_t i;
for (i = 0; i < q_len; i++)
- if (++(q_ptr[i]) != 0)
- goto keep_q;
+ if (++(q_ptr[i]) != 0)
+ goto keep_q;
q_ptr[q_len++] = 1;
}
keep_q:
{
char *d_ptr = c_ptr;
for (; extra_zeroes > 0; extra_zeroes--)
- *d_ptr++ = '0';
+ *d_ptr++ = '0';
while (a_len > 0)
- {
- /* Divide a by 10^9, in-place. */
- mp_limb_t remainder = 0;
- mp_limb_t *ptr = a_ptr + a_len;
- size_t count;
- for (count = a_len; count > 0; count--)
- {
- mp_twolimb_t num =
- ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--ptr;
- *ptr = num / 1000000000;
- remainder = num % 1000000000;
- }
- /* Store the remainder as 9 decimal digits. */
- for (count = 9; count > 0; count--)
- {
- *d_ptr++ = '0' + (remainder % 10);
- remainder = remainder / 10;
- }
- /* Normalize a. */
- if (a_ptr[a_len - 1] == 0)
- a_len--;
- }
+ {
+ /* Divide a by 10^9, in-place. */
+ mp_limb_t remainder = 0;
+ mp_limb_t *ptr = a_ptr + a_len;
+ size_t count;
+ for (count = a_len; count > 0; count--)
+ {
+ mp_twolimb_t num =
+ ((mp_twolimb_t) remainder << GMP_LIMB_BITS) | *--ptr;
+ *ptr = num / 1000000000;
+ remainder = num % 1000000000;
+ }
+ /* Store the remainder as 9 decimal digits. */
+ for (count = 9; count > 0; count--)
+ {
+ *d_ptr++ = '0' + (remainder % 10);
+ remainder = remainder / 10;
+ }
+ /* Normalize a. */
+ if (a_ptr[a_len - 1] == 0)
+ a_len--;
+ }
/* Remove leading zeroes. */
while (d_ptr > c_ptr && d_ptr[-1] == '0')
- d_ptr--;
+ d_ptr--;
/* But keep at least one zero. */
if (d_ptr == c_ptr)
- *d_ptr++ = '0';
+ *d_ptr++ = '0';
/* Terminate the string. */
*d_ptr = '\0';
}
return c_ptr;
}
+# if NEED_PRINTF_LONG_DOUBLE
+
/* Assuming x is finite and >= 0:
write x as x = 2^e * m, where m is a bignum.
Return the allocated memory in case of success, NULL in case of memory
y = frexpl (x, &exp);
if (!(y >= 0.0L && y < 1.0L))
abort ();
- /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * LDBL_MANT_BIT), and the
+ /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * 2^LDBL_MANT_BIT), and the
latter is an integer. */
- /* Convert the mantissa (y * LDBL_MANT_BIT) to a sequence of limbs.
+ /* Convert the mantissa (y * 2^LDBL_MANT_BIT) to a sequence of limbs.
I'm not sure whether it's safe to cast a 'long double' value between
2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
'long double' values between 0 and 2^16 (to 'unsigned int' or 'int',
doesn't matter). */
-# if (LDBL_MANT_BIT % GMP_LIMB_BITS) != 0
-# if (LDBL_MANT_BIT % GMP_LIMB_BITS) > GMP_LIMB_BITS / 2
+# if (LDBL_MANT_BIT % GMP_LIMB_BITS) != 0
+# if (LDBL_MANT_BIT % GMP_LIMB_BITS) > GMP_LIMB_BITS / 2
{
mp_limb_t hi, lo;
y *= (mp_limb_t) 1 << (LDBL_MANT_BIT % (GMP_LIMB_BITS / 2));
hi = (int) y;
y -= hi;
if (!(y >= 0.0L && y < 1.0L))
- abort ();
+ abort ();
y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
lo = (int) y;
y -= lo;
if (!(y >= 0.0L && y < 1.0L))
- abort ();
+ abort ();
m.limbs[LDBL_MANT_BIT / GMP_LIMB_BITS] = (hi << (GMP_LIMB_BITS / 2)) | lo;
}
-# else
+# else
{
mp_limb_t d;
y *= (mp_limb_t) 1 << (LDBL_MANT_BIT % GMP_LIMB_BITS);
d = (int) y;
y -= d;
if (!(y >= 0.0L && y < 1.0L))
- abort ();
+ abort ();
m.limbs[LDBL_MANT_BIT / GMP_LIMB_BITS] = d;
}
+# endif
# endif
-# endif
for (i = LDBL_MANT_BIT / GMP_LIMB_BITS; i > 0; )
{
mp_limb_t hi, lo;
hi = (int) y;
y -= hi;
if (!(y >= 0.0L && y < 1.0L))
- abort ();
+ abort ();
y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
lo = (int) y;
y -= lo;
if (!(y >= 0.0L && y < 1.0L))
- abort ();
+ abort ();
m.limbs[--i] = (hi << (GMP_LIMB_BITS / 2)) | lo;
}
+# if 0 /* On FreeBSD 6.1/x86, 'long double' numbers sometimes have excess
+ precision. */
if (!(y == 0.0L))
abort ();
+# endif
/* Normalise. */
while (m.nlimbs > 0 && m.limbs[m.nlimbs - 1] == 0)
m.nlimbs--;
return m.limbs;
}
-/* Assuming x is finite and >= 0, and n is an integer:
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and >= 0:
+ write x as x = 2^e * m, where m is a bignum.
+ Return the allocated memory in case of success, NULL in case of memory
+ allocation failure. */
+static void *
+decode_double (double x, int *ep, mpn_t *mp)
+{
+ mpn_t m;
+ int exp;
+ double y;
+ size_t i;
+
+ /* Allocate memory for result. */
+ m.nlimbs = (DBL_MANT_BIT + GMP_LIMB_BITS - 1) / GMP_LIMB_BITS;
+ m.limbs = (mp_limb_t *) malloc (m.nlimbs * sizeof (mp_limb_t));
+ if (m.limbs == NULL)
+ return NULL;
+ /* Split into exponential part and mantissa. */
+ y = frexp (x, &exp);
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * 2^DBL_MANT_BIT), and the
+ latter is an integer. */
+ /* Convert the mantissa (y * 2^DBL_MANT_BIT) to a sequence of limbs.
+ I'm not sure whether it's safe to cast a 'double' value between
+ 2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
+ 'double' values between 0 and 2^16 (to 'unsigned int' or 'int',
+ doesn't matter). */
+# if (DBL_MANT_BIT % GMP_LIMB_BITS) != 0
+# if (DBL_MANT_BIT % GMP_LIMB_BITS) > GMP_LIMB_BITS / 2
+ {
+ mp_limb_t hi, lo;
+ y *= (mp_limb_t) 1 << (DBL_MANT_BIT % (GMP_LIMB_BITS / 2));
+ hi = (int) y;
+ y -= hi;
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+ lo = (int) y;
+ y -= lo;
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ m.limbs[DBL_MANT_BIT / GMP_LIMB_BITS] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+ }
+# else
+ {
+ mp_limb_t d;
+ y *= (mp_limb_t) 1 << (DBL_MANT_BIT % GMP_LIMB_BITS);
+ d = (int) y;
+ y -= d;
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ m.limbs[DBL_MANT_BIT / GMP_LIMB_BITS] = d;
+ }
+# endif
+# endif
+ for (i = DBL_MANT_BIT / GMP_LIMB_BITS; i > 0; )
+ {
+ mp_limb_t hi, lo;
+ y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+ hi = (int) y;
+ y -= hi;
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ y *= (mp_limb_t) 1 << (GMP_LIMB_BITS / 2);
+ lo = (int) y;
+ y -= lo;
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ m.limbs[--i] = (hi << (GMP_LIMB_BITS / 2)) | lo;
+ }
+ if (!(y == 0.0))
+ abort ();
+ /* Normalise. */
+ while (m.nlimbs > 0 && m.limbs[m.nlimbs - 1] == 0)
+ m.nlimbs--;
+ *mp = m;
+ *ep = exp - DBL_MANT_BIT;
+ return m.limbs;
+}
+
+# endif
+
+/* Assuming x = 2^e * m is finite and >= 0, and n is an integer:
Returns the decimal representation of round (x * 10^n).
Return the allocated memory - containing the decimal digits in low-to-high
order, terminated with a NUL character - in case of success, NULL in case
of memory allocation failure. */
static char *
-scale10_round_decimal_long_double (long double x, int n)
+scale10_round_decimal_decoded (int e, mpn_t m, void *memory, int n)
{
- int e;
- mpn_t m;
- void *memory = decode_long_double (x, &e, &m);
int s;
size_t extra_zeroes;
unsigned int abs_n;
abs_n = (n >= 0 ? n : -n);
abs_s = (s >= 0 ? s : -s);
pow5_ptr = (mp_limb_t *) malloc (((int)(abs_n * (2.322f / GMP_LIMB_BITS)) + 1
- + abs_s / GMP_LIMB_BITS + 1)
- * sizeof (mp_limb_t));
+ + abs_s / GMP_LIMB_BITS + 1)
+ * sizeof (mp_limb_t));
if (pow5_ptr == NULL)
{
free (memory);
if (abs_n > 0)
{
static mp_limb_t const small_pow5[13 + 1] =
- {
- 1, 5, 25, 125, 625, 3125, 15625, 78125, 390625, 1953125, 9765625,
- 48828125, 244140625, 1220703125
- };
+ {
+ 1, 5, 25, 125, 625, 3125, 15625, 78125, 390625, 1953125, 9765625,
+ 48828125, 244140625, 1220703125
+ };
unsigned int n13;
for (n13 = 0; n13 <= abs_n; n13 += 13)
- {
- mp_limb_t digit1 = small_pow5[n13 + 13 <= abs_n ? 13 : abs_n - n13];
- size_t j;
- mp_twolimb_t carry = 0;
- for (j = 0; j < pow5_len; j++)
- {
- mp_limb_t digit2 = pow5_ptr[j];
- carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
- pow5_ptr[j] = (mp_limb_t) carry;
- carry = carry >> GMP_LIMB_BITS;
- }
- if (carry > 0)
- pow5_ptr[pow5_len++] = (mp_limb_t) carry;
- }
+ {
+ mp_limb_t digit1 = small_pow5[n13 + 13 <= abs_n ? 13 : abs_n - n13];
+ size_t j;
+ mp_twolimb_t carry = 0;
+ for (j = 0; j < pow5_len; j++)
+ {
+ mp_limb_t digit2 = pow5_ptr[j];
+ carry += (mp_twolimb_t) digit1 * (mp_twolimb_t) digit2;
+ pow5_ptr[j] = (mp_limb_t) carry;
+ carry = carry >> GMP_LIMB_BITS;
+ }
+ if (carry > 0)
+ pow5_ptr[pow5_len++] = (mp_limb_t) carry;
+ }
}
s_limbs = abs_s / GMP_LIMB_BITS;
s_bits = abs_s % GMP_LIMB_BITS;
{
/* Multiply with 2^|s|. */
if (s_bits > 0)
- {
- mp_limb_t *ptr = pow5_ptr;
- mp_twolimb_t accu = 0;
- size_t count;
- for (count = pow5_len; count > 0; count--)
- {
- accu += (mp_twolimb_t) *ptr << s_bits;
- *ptr++ = (mp_limb_t) accu;
- accu = accu >> GMP_LIMB_BITS;
- }
- if (accu > 0)
- {
- *ptr = (mp_limb_t) accu;
- pow5_len++;
- }
- }
+ {
+ mp_limb_t *ptr = pow5_ptr;
+ mp_twolimb_t accu = 0;
+ size_t count;
+ for (count = pow5_len; count > 0; count--)
+ {
+ accu += (mp_twolimb_t) *ptr << s_bits;
+ *ptr++ = (mp_limb_t) accu;
+ accu = accu >> GMP_LIMB_BITS;
+ }
+ if (accu > 0)
+ {
+ *ptr = (mp_limb_t) accu;
+ pow5_len++;
+ }
+ }
if (s_limbs > 0)
- {
- size_t count;
- for (count = pow5_len; count > 0;)
- {
- count--;
- pow5_ptr[s_limbs + count] = pow5_ptr[count];
- }
- for (count = s_limbs; count > 0;)
- {
- count--;
- pow5_ptr[count] = 0;
- }
- pow5_len += s_limbs;
- }
+ {
+ size_t count;
+ for (count = pow5_len; count > 0;)
+ {
+ count--;
+ pow5_ptr[s_limbs + count] = pow5_ptr[count];
+ }
+ for (count = s_limbs; count > 0;)
+ {
+ count--;
+ pow5_ptr[count] = 0;
+ }
+ pow5_len += s_limbs;
+ }
pow5.limbs = pow5_ptr;
pow5.nlimbs = pow5_len;
if (n >= 0)
- {
- /* Multiply m with pow5. No division needed. */
- z_memory = multiply (m, pow5, &z);
- }
+ {
+ /* Multiply m with pow5. No division needed. */
+ z_memory = multiply (m, pow5, &z);
+ }
else
- {
- /* Divide m by pow5 and round. */
- z_memory = divide (m, pow5, &z);
- }
+ {
+ /* Divide m by pow5 and round. */
+ z_memory = divide (m, pow5, &z);
+ }
}
else
{
pow5.limbs = pow5_ptr;
pow5.nlimbs = pow5_len;
if (n >= 0)
- {
- /* n >= 0, s < 0.
- Multiply m with pow5, then divide by 2^|s|. */
- mpn_t numerator;
- mpn_t denominator;
- void *tmp_memory;
- tmp_memory = multiply (m, pow5, &numerator);
- if (tmp_memory == NULL)
- {
- free (pow5_ptr);
- free (memory);
- return NULL;
- }
- /* Construct 2^|s|. */
- {
- mp_limb_t *ptr = pow5_ptr + pow5_len;
- size_t i;
- for (i = 0; i < s_limbs; i++)
- ptr[i] = 0;
- ptr[s_limbs] = (mp_limb_t) 1 << s_bits;
- denominator.limbs = ptr;
- denominator.nlimbs = s_limbs + 1;
- }
- z_memory = divide (numerator, denominator, &z);
- free (tmp_memory);
- }
+ {
+ /* n >= 0, s < 0.
+ Multiply m with pow5, then divide by 2^|s|. */
+ mpn_t numerator;
+ mpn_t denominator;
+ void *tmp_memory;
+ tmp_memory = multiply (m, pow5, &numerator);
+ if (tmp_memory == NULL)
+ {
+ free (pow5_ptr);
+ free (memory);
+ return NULL;
+ }
+ /* Construct 2^|s|. */
+ {
+ mp_limb_t *ptr = pow5_ptr + pow5_len;
+ size_t i;
+ for (i = 0; i < s_limbs; i++)
+ ptr[i] = 0;
+ ptr[s_limbs] = (mp_limb_t) 1 << s_bits;
+ denominator.limbs = ptr;
+ denominator.nlimbs = s_limbs + 1;
+ }
+ z_memory = divide (numerator, denominator, &z);
+ free (tmp_memory);
+ }
else
- {
- /* n < 0, s > 0.
- Multiply m with 2^s, then divide by pow5. */
- mpn_t numerator;
- mp_limb_t *num_ptr;
- num_ptr = (mp_limb_t *) malloc ((m.nlimbs + s_limbs + 1)
- * sizeof (mp_limb_t));
- if (num_ptr == NULL)
- {
- free (pow5_ptr);
- free (memory);
- return NULL;
- }
- {
- mp_limb_t *destptr = num_ptr;
- {
- size_t i;
- for (i = 0; i < s_limbs; i++)
- *destptr++ = 0;
- }
- if (s_bits > 0)
- {
- const mp_limb_t *sourceptr = m.limbs;
- mp_twolimb_t accu = 0;
- size_t count;
- for (count = m.nlimbs; count > 0; count--)
- {
- accu += (mp_twolimb_t) *sourceptr++ << s;
- *destptr++ = (mp_limb_t) accu;
- accu = accu >> GMP_LIMB_BITS;
- }
- if (accu > 0)
- *destptr++ = (mp_limb_t) accu;
- }
- else
- {
- const mp_limb_t *sourceptr = m.limbs;
- size_t count;
- for (count = m.nlimbs; count > 0; count--)
- *destptr++ = *sourceptr++;
- }
- numerator.limbs = num_ptr;
- numerator.nlimbs = destptr - num_ptr;
- }
- z_memory = divide (numerator, pow5, &z);
- free (num_ptr);
- }
+ {
+ /* n < 0, s > 0.
+ Multiply m with 2^s, then divide by pow5. */
+ mpn_t numerator;
+ mp_limb_t *num_ptr;
+ num_ptr = (mp_limb_t *) malloc ((m.nlimbs + s_limbs + 1)
+ * sizeof (mp_limb_t));
+ if (num_ptr == NULL)
+ {
+ free (pow5_ptr);
+ free (memory);
+ return NULL;
+ }
+ {
+ mp_limb_t *destptr = num_ptr;
+ {
+ size_t i;
+ for (i = 0; i < s_limbs; i++)
+ *destptr++ = 0;
+ }
+ if (s_bits > 0)
+ {
+ const mp_limb_t *sourceptr = m.limbs;
+ mp_twolimb_t accu = 0;
+ size_t count;
+ for (count = m.nlimbs; count > 0; count--)
+ {
+ accu += (mp_twolimb_t) *sourceptr++ << s_bits;
+ *destptr++ = (mp_limb_t) accu;
+ accu = accu >> GMP_LIMB_BITS;
+ }
+ if (accu > 0)
+ *destptr++ = (mp_limb_t) accu;
+ }
+ else
+ {
+ const mp_limb_t *sourceptr = m.limbs;
+ size_t count;
+ for (count = m.nlimbs; count > 0; count--)
+ *destptr++ = *sourceptr++;
+ }
+ numerator.limbs = num_ptr;
+ numerator.nlimbs = destptr - num_ptr;
+ }
+ z_memory = divide (numerator, pow5, &z);
+ free (num_ptr);
+ }
}
free (pow5_ptr);
free (memory);
return digits;
}
+# if NEED_PRINTF_LONG_DOUBLE
+
+/* Assuming x is finite and >= 0, and n is an integer:
+ Returns the decimal representation of round (x * 10^n).
+ Return the allocated memory - containing the decimal digits in low-to-high
+ order, terminated with a NUL character - in case of success, NULL in case
+ of memory allocation failure. */
+static char *
+scale10_round_decimal_long_double (long double x, int n)
+{
+ int e IF_LINT(= 0);
+ mpn_t m;
+ void *memory = decode_long_double (x, &e, &m);
+ return scale10_round_decimal_decoded (e, m, memory, n);
+}
+
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and >= 0, and n is an integer:
+ Returns the decimal representation of round (x * 10^n).
+ Return the allocated memory - containing the decimal digits in low-to-high
+ order, terminated with a NUL character - in case of success, NULL in case
+ of memory allocation failure. */
+static char *
+scale10_round_decimal_double (double x, int n)
+{
+ int e IF_LINT(= 0);
+ mpn_t m;
+ void *memory = decode_double (x, &e, &m);
+ return scale10_round_decimal_decoded (e, m, memory, n);
+}
+
+# endif
+
+# if NEED_PRINTF_LONG_DOUBLE
+
/* Assuming x is finite and > 0:
Return an approximation for n with 10^n <= x < 10^(n+1).
The approximation is usually the right n, but may be off by 1 sometimes. */
if (y < 0.5L)
{
while (y < (1.0L / (1 << (GMP_LIMB_BITS / 2)) / (1 << (GMP_LIMB_BITS / 2))))
- {
- y *= 1.0L * (1 << (GMP_LIMB_BITS / 2)) * (1 << (GMP_LIMB_BITS / 2));
- exp -= GMP_LIMB_BITS;
- }
+ {
+ y *= 1.0L * (1 << (GMP_LIMB_BITS / 2)) * (1 << (GMP_LIMB_BITS / 2));
+ exp -= GMP_LIMB_BITS;
+ }
if (y < (1.0L / (1 << 16)))
- {
- y *= 1.0L * (1 << 16);
- exp -= 16;
- }
+ {
+ y *= 1.0L * (1 << 16);
+ exp -= 16;
+ }
if (y < (1.0L / (1 << 8)))
- {
- y *= 1.0L * (1 << 8);
- exp -= 8;
- }
+ {
+ y *= 1.0L * (1 << 8);
+ exp -= 8;
+ }
if (y < (1.0L / (1 << 4)))
- {
- y *= 1.0L * (1 << 4);
- exp -= 4;
- }
+ {
+ y *= 1.0L * (1 << 4);
+ exp -= 4;
+ }
if (y < (1.0L / (1 << 2)))
- {
- y *= 1.0L * (1 << 2);
- exp -= 2;
- }
+ {
+ y *= 1.0L * (1 << 2);
+ exp -= 2;
+ }
if (y < (1.0L / (1 << 1)))
- {
- y *= 1.0L * (1 << 1);
- exp -= 1;
- }
+ {
+ y *= 1.0L * (1 << 1);
+ exp -= 1;
+ }
}
if (!(y >= 0.5L && y < 1.0L))
abort ();
}
/* Now 0.95 <= z <= 1.01. */
z = 1 - z;
- /* log(1-z) = - z - z^2/2 - z^3/3 - z^4/4 - ...
+ /* log2(1-z) = 1/log(2) * (- z - z^2/2 - z^3/3 - z^4/4 - ...)
+ Four terms are enough to get an approximation with error < 10^-7. */
+ l -= 1.4426950408889634074 * z * (1.0 + z * (0.5 + z * ((1.0 / 3) + z * 0.25)));
+ /* Finally multiply with log(2)/log(10), yields an approximation for
+ log10(x). */
+ l *= 0.30102999566398119523;
+ /* Round down to the next integer. */
+ return (int) l + (l < 0 ? -1 : 0);
+}
+
+# endif
+
+# if NEED_PRINTF_DOUBLE
+
+/* Assuming x is finite and > 0:
+ Return an approximation for n with 10^n <= x < 10^(n+1).
+ The approximation is usually the right n, but may be off by 1 sometimes. */
+static int
+floorlog10 (double x)
+{
+ int exp;
+ double y;
+ double z;
+ double l;
+
+ /* Split into exponential part and mantissa. */
+ y = frexp (x, &exp);
+ if (!(y >= 0.0 && y < 1.0))
+ abort ();
+ if (y == 0.0)
+ return INT_MIN;
+ if (y < 0.5)
+ {
+ while (y < (1.0 / (1 << (GMP_LIMB_BITS / 2)) / (1 << (GMP_LIMB_BITS / 2))))
+ {
+ y *= 1.0 * (1 << (GMP_LIMB_BITS / 2)) * (1 << (GMP_LIMB_BITS / 2));
+ exp -= GMP_LIMB_BITS;
+ }
+ if (y < (1.0 / (1 << 16)))
+ {
+ y *= 1.0 * (1 << 16);
+ exp -= 16;
+ }
+ if (y < (1.0 / (1 << 8)))
+ {
+ y *= 1.0 * (1 << 8);
+ exp -= 8;
+ }
+ if (y < (1.0 / (1 << 4)))
+ {
+ y *= 1.0 * (1 << 4);
+ exp -= 4;
+ }
+ if (y < (1.0 / (1 << 2)))
+ {
+ y *= 1.0 * (1 << 2);
+ exp -= 2;
+ }
+ if (y < (1.0 / (1 << 1)))
+ {
+ y *= 1.0 * (1 << 1);
+ exp -= 1;
+ }
+ }
+ if (!(y >= 0.5 && y < 1.0))
+ abort ();
+ /* Compute an approximation for l = log2(x) = exp + log2(y). */
+ l = exp;
+ z = y;
+ if (z < 0.70710678118654752444)
+ {
+ z *= 1.4142135623730950488;
+ l -= 0.5;
+ }
+ if (z < 0.8408964152537145431)
+ {
+ z *= 1.1892071150027210667;
+ l -= 0.25;
+ }
+ if (z < 0.91700404320467123175)
+ {
+ z *= 1.0905077326652576592;
+ l -= 0.125;
+ }
+ if (z < 0.9576032806985736469)
+ {
+ z *= 1.0442737824274138403;
+ l -= 0.0625;
+ }
+ /* Now 0.95 <= z <= 1.01. */
+ z = 1 - z;
+ /* log2(1-z) = 1/log(2) * (- z - z^2/2 - z^3/3 - z^4/4 - ...)
Four terms are enough to get an approximation with error < 10^-7. */
- l -= z * (1.0 + z * (0.5 + z * ((1.0 / 3) + z * 0.25)));
+ l -= 1.4426950408889634074 * z * (1.0 + z * (0.5 + z * ((1.0 / 3) + z * 0.25)));
/* Finally multiply with log(2)/log(10), yields an approximation for
log10(x). */
l *= 0.30102999566398119523;
return (int) l + (l < 0 ? -1 : 0);
}
+# endif
+
+/* Tests whether a string of digits consists of exactly PRECISION zeroes and
+ a single '1' digit. */
+static int
+is_borderline (const char *digits, size_t precision)
+{
+ for (; precision > 0; precision--, digits++)
+ if (*digits != '0')
+ return 0;
+ if (*digits != '1')
+ return 0;
+ digits++;
+ return *digits == '\0';
+}
+
+#endif
+
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99
+
+/* Use a different function name, to make it possible that the 'wchar_t'
+ parametrization and the 'char' parametrization get compiled in the same
+ translation unit. */
+# if WIDE_CHAR_VERSION
+# define MAX_ROOM_NEEDED wmax_room_needed
+# else
+# define MAX_ROOM_NEEDED max_room_needed
+# endif
+
+/* Returns the number of TCHAR_T units needed as temporary space for the result
+ of sprintf or SNPRINTF of a single conversion directive. */
+static size_t
+MAX_ROOM_NEEDED (const arguments *ap, size_t arg_index, FCHAR_T conversion,
+ arg_type type, int flags, size_t width, int has_precision,
+ size_t precision, int pad_ourselves)
+{
+ size_t tmp_length;
+
+ switch (conversion)
+ {
+ case 'd': case 'i': case 'u':
+# if HAVE_LONG_LONG_INT
+ if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+ * 0.30103 /* binary -> decimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+# endif
+ if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+ * 0.30103 /* binary -> decimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+ tmp_length =
+ (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+ * 0.30103 /* binary -> decimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Multiply by 2, as an estimate for FLAG_GROUP. */
+ tmp_length = xsum (tmp_length, tmp_length);
+ /* Add 1, to account for a leading sign. */
+ tmp_length = xsum (tmp_length, 1);
+ break;
+
+ case 'o':
+# if HAVE_LONG_LONG_INT
+ if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+ * 0.333334 /* binary -> octal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+# endif
+ if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+ * 0.333334 /* binary -> octal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+ tmp_length =
+ (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+ * 0.333334 /* binary -> octal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Add 1, to account for a leading sign. */
+ tmp_length = xsum (tmp_length, 1);
+ break;
+
+ case 'x': case 'X':
+# if HAVE_LONG_LONG_INT
+ if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+ * 0.25 /* binary -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+# endif
+ if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+ tmp_length =
+ (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+ * 0.25 /* binary -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+ tmp_length =
+ (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+ * 0.25 /* binary -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Add 2, to account for a leading sign or alternate form. */
+ tmp_length = xsum (tmp_length, 2);
+ break;
+
+ case 'f': case 'F':
+ if (type == TYPE_LONGDOUBLE)
+ tmp_length =
+ (unsigned int) (LDBL_MAX_EXP
+ * 0.30103 /* binary -> decimal */
+ * 2 /* estimate for FLAG_GROUP */
+ )
+ + 1 /* turn floor into ceil */
+ + 10; /* sign, decimal point etc. */
+ else
+ tmp_length =
+ (unsigned int) (DBL_MAX_EXP
+ * 0.30103 /* binary -> decimal */
+ * 2 /* estimate for FLAG_GROUP */
+ )
+ + 1 /* turn floor into ceil */
+ + 10; /* sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, precision);
+ break;
+
+ case 'e': case 'E': case 'g': case 'G':
+ tmp_length =
+ 12; /* sign, decimal point, exponent etc. */
+ tmp_length = xsum (tmp_length, precision);
+ break;
+
+ case 'a': case 'A':
+ if (type == TYPE_LONGDOUBLE)
+ tmp_length =
+ (unsigned int) (LDBL_DIG
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+ tmp_length =
+ (unsigned int) (DBL_DIG
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Account for sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, 12);
+ break;
+
+ case 'c':
+# if HAVE_WINT_T && !WIDE_CHAR_VERSION
+ if (type == TYPE_WIDE_CHAR)
+ tmp_length = MB_CUR_MAX;
+ else
+# endif
+ tmp_length = 1;
+ break;
+
+ case 's':
+# if HAVE_WCHAR_T
+ if (type == TYPE_WIDE_STRING)
+ {
+# if WIDE_CHAR_VERSION
+ /* ISO C says about %ls in fwprintf:
+ "If the precision is not specified or is greater than the size
+ of the array, the array shall contain a null wide character."
+ So if there is a precision, we must not use wcslen. */
+ const wchar_t *arg = ap->arg[arg_index].a.a_wide_string;
+
+ if (has_precision)
+ tmp_length = local_wcsnlen (arg, precision);
+ else
+ tmp_length = local_wcslen (arg);
+# else
+ /* ISO C says about %ls in fprintf:
+ "If a precision is specified, no more than that many bytes are
+ written (including shift sequences, if any), and the array
+ shall contain a null wide character if, to equal the multibyte
+ character sequence length given by the precision, the function
+ would need to access a wide character one past the end of the
+ array."
+ So if there is a precision, we must not use wcslen. */
+ /* This case has already been handled separately in VASNPRINTF. */
+ abort ();
+# endif
+ }
+ else
+# endif
+ {
+# if WIDE_CHAR_VERSION
+ /* ISO C says about %s in fwprintf:
+ "If the precision is not specified or is greater than the size
+ of the converted array, the converted array shall contain a
+ null wide character."
+ So if there is a precision, we must not use strlen. */
+ /* This case has already been handled separately in VASNPRINTF. */
+ abort ();
+# else
+ /* ISO C says about %s in fprintf:
+ "If the precision is not specified or greater than the size of
+ the array, the array shall contain a null character."
+ So if there is a precision, we must not use strlen. */
+ const char *arg = ap->arg[arg_index].a.a_string;
+
+ if (has_precision)
+ tmp_length = local_strnlen (arg, precision);
+ else
+ tmp_length = strlen (arg);
+# endif
+ }
+ break;
+
+ case 'p':
+ tmp_length =
+ (unsigned int) (sizeof (void *) * CHAR_BIT
+ * 0.25 /* binary -> hexadecimal */
+ )
+ + 1 /* turn floor into ceil */
+ + 2; /* account for leading 0x */
+ break;
+
+ default:
+ abort ();
+ }
+
+ if (!pad_ourselves)
+ {
+# if ENABLE_UNISTDIO
+ /* Padding considers the number of characters, therefore the number of
+ elements after padding may be
+ > max (tmp_length, width)
+ but is certainly
+ <= tmp_length + width. */
+ tmp_length = xsum (tmp_length, width);
+# else
+ /* Padding considers the number of elements, says POSIX. */
+ if (tmp_length < width)
+ tmp_length = width;
+# endif
+ }
+
+ tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+ return tmp_length;
+}
+
#endif
DCHAR_T *
VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
- const FCHAR_T *format, va_list args)
+ const FCHAR_T *format, va_list args)
{
DIRECTIVES d;
arguments a;
if (PRINTF_PARSE (format, &d, &a) < 0)
- {
- errno = EINVAL;
- return NULL;
- }
+ /* errno is already set. */
+ return NULL;
#define CLEANUP() \
- free (d.dir); \
- if (a.arg) \
+ if (d.dir != d.direct_alloc_dir) \
+ free (d.dir); \
+ if (a.arg != a.direct_alloc_arg) \
free (a.arg);
if (PRINTF_FETCHARGS (args, &a) < 0)
#if HAVE_ALLOCA
if (buf_neededlength < 4000 / sizeof (TCHAR_T))
{
- buf = (TCHAR_T *) alloca (buf_neededlength * sizeof (TCHAR_T));
- buf_malloced = NULL;
+ buf = (TCHAR_T *) alloca (buf_neededlength * sizeof (TCHAR_T));
+ buf_malloced = NULL;
}
else
#endif
{
- size_t buf_memsize = xtimes (buf_neededlength, sizeof (TCHAR_T));
- if (size_overflow_p (buf_memsize))
- goto out_of_memory_1;
- buf = (TCHAR_T *) malloc (buf_memsize);
- if (buf == NULL)
- goto out_of_memory_1;
- buf_malloced = buf;
+ size_t buf_memsize = xtimes (buf_neededlength, sizeof (TCHAR_T));
+ if (size_overflow_p (buf_memsize))
+ goto out_of_memory_1;
+ buf = (TCHAR_T *) malloc (buf_memsize);
+ if (buf == NULL)
+ goto out_of_memory_1;
+ buf_malloced = buf;
}
if (resultbuf != NULL)
{
- result = resultbuf;
- allocated = *lengthp;
+ result = resultbuf;
+ allocated = *lengthp;
}
else
{
- result = NULL;
- allocated = 0;
+ result = NULL;
+ allocated = 0;
}
length = 0;
/* Invariants:
/* Ensures that allocated >= needed. Aborts through a jump to
out_of_memory if needed is SIZE_MAX or otherwise too big. */
#define ENSURE_ALLOCATION(needed) \
- if ((needed) > allocated) \
- { \
- size_t memory_size; \
- DCHAR_T *memory; \
- \
- allocated = (allocated > 0 ? xtimes (allocated, 2) : 12); \
- if ((needed) > allocated) \
- allocated = (needed); \
- memory_size = xtimes (allocated, sizeof (DCHAR_T)); \
- if (size_overflow_p (memory_size)) \
- goto out_of_memory; \
- if (result == resultbuf || result == NULL) \
- memory = (DCHAR_T *) malloc (memory_size); \
- else \
- memory = (DCHAR_T *) realloc (result, memory_size); \
- if (memory == NULL) \
- goto out_of_memory; \
- if (result == resultbuf && length > 0) \
- DCHAR_CPY (memory, result, length); \
- result = memory; \
+ if ((needed) > allocated) \
+ { \
+ size_t memory_size; \
+ DCHAR_T *memory; \
+ \
+ allocated = (allocated > 0 ? xtimes (allocated, 2) : 12); \
+ if ((needed) > allocated) \
+ allocated = (needed); \
+ memory_size = xtimes (allocated, sizeof (DCHAR_T)); \
+ if (size_overflow_p (memory_size)) \
+ goto out_of_memory; \
+ if (result == resultbuf || result == NULL) \
+ memory = (DCHAR_T *) malloc (memory_size); \
+ else \
+ memory = (DCHAR_T *) realloc (result, memory_size); \
+ if (memory == NULL) \
+ goto out_of_memory; \
+ if (result == resultbuf && length > 0) \
+ DCHAR_CPY (memory, result, length); \
+ result = memory; \
}
for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
{
- if (cp != dp->dir_start)
- {
- size_t n = dp->dir_start - cp;
- size_t augmented_length = xsum (length, n);
-
- ENSURE_ALLOCATION (augmented_length);
- /* This copies a piece of FCHAR_T[] into a DCHAR_T[]. Here we
- need that the format string contains only ASCII characters
- if FCHAR_T and DCHAR_T are not the same type. */
- if (sizeof (FCHAR_T) == sizeof (DCHAR_T))
- {
- DCHAR_CPY (result + length, (const DCHAR_T *) cp, n);
- length = augmented_length;
- }
- else
- {
- do
- result[length++] = (unsigned char) *cp++;
- while (--n > 0);
- }
- }
- if (i == d.count)
- break;
-
- /* Execute a single directive. */
- if (dp->conversion == '%')
- {
- size_t augmented_length;
-
- if (!(dp->arg_index == ARG_NONE))
- abort ();
- augmented_length = xsum (length, 1);
- ENSURE_ALLOCATION (augmented_length);
- result[length] = '%';
- length = augmented_length;
- }
- else
- {
- if (!(dp->arg_index != ARG_NONE))
- abort ();
-
- if (dp->conversion == 'n')
- {
- switch (a.arg[dp->arg_index].type)
- {
- case TYPE_COUNT_SCHAR_POINTER:
- *a.arg[dp->arg_index].a.a_count_schar_pointer = length;
- break;
- case TYPE_COUNT_SHORT_POINTER:
- *a.arg[dp->arg_index].a.a_count_short_pointer = length;
- break;
- case TYPE_COUNT_INT_POINTER:
- *a.arg[dp->arg_index].a.a_count_int_pointer = length;
- break;
- case TYPE_COUNT_LONGINT_POINTER:
- *a.arg[dp->arg_index].a.a_count_longint_pointer = length;
- break;
+ if (cp != dp->dir_start)
+ {
+ size_t n = dp->dir_start - cp;
+ size_t augmented_length = xsum (length, n);
+
+ ENSURE_ALLOCATION (augmented_length);
+ /* This copies a piece of FCHAR_T[] into a DCHAR_T[]. Here we
+ need that the format string contains only ASCII characters
+ if FCHAR_T and DCHAR_T are not the same type. */
+ if (sizeof (FCHAR_T) == sizeof (DCHAR_T))
+ {
+ DCHAR_CPY (result + length, (const DCHAR_T *) cp, n);
+ length = augmented_length;
+ }
+ else
+ {
+ do
+ result[length++] = (unsigned char) *cp++;
+ while (--n > 0);
+ }
+ }
+ if (i == d.count)
+ break;
+
+ /* Execute a single directive. */
+ if (dp->conversion == '%')
+ {
+ size_t augmented_length;
+
+ if (!(dp->arg_index == ARG_NONE))
+ abort ();
+ augmented_length = xsum (length, 1);
+ ENSURE_ALLOCATION (augmented_length);
+ result[length] = '%';
+ length = augmented_length;
+ }
+ else
+ {
+ if (!(dp->arg_index != ARG_NONE))
+ abort ();
+
+ if (dp->conversion == 'n')
+ {
+ switch (a.arg[dp->arg_index].type)
+ {
+ case TYPE_COUNT_SCHAR_POINTER:
+ *a.arg[dp->arg_index].a.a_count_schar_pointer = length;
+ break;
+ case TYPE_COUNT_SHORT_POINTER:
+ *a.arg[dp->arg_index].a.a_count_short_pointer = length;
+ break;
+ case TYPE_COUNT_INT_POINTER:
+ *a.arg[dp->arg_index].a.a_count_int_pointer = length;
+ break;
+ case TYPE_COUNT_LONGINT_POINTER:
+ *a.arg[dp->arg_index].a.a_count_longint_pointer = length;
+ break;
#if HAVE_LONG_LONG_INT
- case TYPE_COUNT_LONGLONGINT_POINTER:
- *a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
- break;
+ case TYPE_COUNT_LONGLONGINT_POINTER:
+ *a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
+ break;
#endif
- default:
- abort ();
- }
- }
+ default:
+ abort ();
+ }
+ }
#if ENABLE_UNISTDIO
- /* The unistdio extensions. */
- else if (dp->conversion == 'U')
- {
- arg_type type = a.arg[dp->arg_index].type;
- int flags = dp->flags;
- int has_width;
- size_t width;
- int has_precision;
- size_t precision;
-
- has_width = 0;
- width = 0;
- if (dp->width_start != dp->width_end)
- {
- if (dp->width_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->width_arg_index].a.a_int;
- if (arg < 0)
- {
- /* "A negative field width is taken as a '-' flag
- followed by a positive field width." */
- flags |= FLAG_LEFT;
- width = (unsigned int) (-arg);
- }
- else
- width = arg;
- }
- else
- {
- const FCHAR_T *digitp = dp->width_start;
-
- do
- width = xsum (xtimes (width, 10), *digitp++ - '0');
- while (digitp != dp->width_end);
- }
- has_width = 1;
- }
-
- has_precision = 0;
- precision = 0;
- if (dp->precision_start != dp->precision_end)
- {
- if (dp->precision_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->precision_arg_index].a.a_int;
- /* "A negative precision is taken as if the precision
- were omitted." */
- if (arg >= 0)
- {
- precision = arg;
- has_precision = 1;
- }
- }
- else
- {
- const FCHAR_T *digitp = dp->precision_start + 1;
-
- precision = 0;
- while (digitp != dp->precision_end)
- precision = xsum (xtimes (precision, 10), *digitp++ - '0');
- has_precision = 1;
- }
- }
-
- switch (type)
- {
- case TYPE_U8_STRING:
- {
- const uint8_t *arg = a.arg[dp->arg_index].a.a_u8_string;
- const uint8_t *arg_end;
- size_t characters;
-
- if (has_precision)
- {
- /* Use only PRECISION characters, from the left. */
- arg_end = arg;
- characters = 0;
- for (; precision > 0; precision--)
- {
- int count = u8_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else if (has_width)
- {
- /* Use the entire string, and count the number of
- characters. */
- arg_end = arg;
- characters = 0;
- for (;;)
- {
- int count = u8_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else
- {
- /* Use the entire string. */
- arg_end = arg + u8_strlen (arg);
- /* The number of characters doesn't matter. */
- characters = 0;
- }
-
- if (has_width && width > characters
- && !(dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
+ /* The unistdio extensions. */
+ else if (dp->conversion == 'U')
+ {
+ arg_type type = a.arg[dp->arg_index].type;
+ int flags = dp->flags;
+ int has_width;
+ size_t width;
+ int has_precision;
+ size_t precision;
+
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
+
+ has_precision = 0;
+ precision = 0;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+
+ switch (type)
+ {
+ case TYPE_U8_STRING:
+ {
+ const uint8_t *arg = a.arg[dp->arg_index].a.a_u8_string;
+ const uint8_t *arg_end;
+ size_t characters;
+
+ if (has_precision)
+ {
+ /* Use only PRECISION characters, from the left. */
+ arg_end = arg;
+ characters = 0;
+ for (; precision > 0; precision--)
+ {
+ int count = u8_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else if (has_width)
+ {
+ /* Use the entire string, and count the number of
+ characters. */
+ arg_end = arg;
+ characters = 0;
+ for (;;)
+ {
+ int count = u8_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else
+ {
+ /* Use the entire string. */
+ arg_end = arg + u8_strlen (arg);
+ /* The number of characters doesn't matter. */
+ characters = 0;
+ }
+
+ if (has_width && width > characters
+ && !(dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
# if DCHAR_IS_UINT8_T
- {
- size_t n = arg_end - arg;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_CPY (result + length, arg, n);
- length += n;
- }
+ {
+ size_t n = arg_end - arg;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_CPY (result + length, arg, n);
+ length += n;
+ }
# else
- { /* Convert. */
- DCHAR_T *converted = result + length;
- size_t converted_len = allocated - length;
+ { /* Convert. */
+ DCHAR_T *converted = result + length;
+ size_t converted_len = allocated - length;
# if DCHAR_IS_TCHAR
- /* Convert from UTF-8 to locale encoding. */
- if (u8_conv_to_encoding (locale_charset (),
- iconveh_question_mark,
- arg, arg_end - arg, NULL,
- &converted, &converted_len)
- < 0)
+ /* Convert from UTF-8 to locale encoding. */
+ converted =
+ u8_conv_to_encoding (locale_charset (),
+ iconveh_question_mark,
+ arg, arg_end - arg, NULL,
+ converted, &converted_len);
# else
- /* Convert from UTF-8 to UTF-16/UTF-32. */
- converted =
- U8_TO_DCHAR (arg, arg_end - arg,
- converted, &converted_len);
- if (converted == NULL)
+ /* Convert from UTF-8 to UTF-16/UTF-32. */
+ converted =
+ U8_TO_DCHAR (arg, arg_end - arg,
+ converted, &converted_len);
# endif
- {
- int saved_errno = errno;
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = saved_errno;
- return NULL;
- }
- if (converted != result + length)
- {
- ENSURE_ALLOCATION (xsum (length, converted_len));
- DCHAR_CPY (result + length, converted, converted_len);
- free (converted);
- }
- length += converted_len;
- }
+ if (converted == NULL)
+ {
+ int saved_errno = errno;
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = saved_errno;
+ return NULL;
+ }
+ if (converted != result + length)
+ {
+ ENSURE_ALLOCATION (xsum (length, converted_len));
+ DCHAR_CPY (result + length, converted, converted_len);
+ free (converted);
+ }
+ length += converted_len;
+ }
# endif
- if (has_width && width > characters
- && (dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
- }
- break;
-
- case TYPE_U16_STRING:
- {
- const uint16_t *arg = a.arg[dp->arg_index].a.a_u16_string;
- const uint16_t *arg_end;
- size_t characters;
-
- if (has_precision)
- {
- /* Use only PRECISION characters, from the left. */
- arg_end = arg;
- characters = 0;
- for (; precision > 0; precision--)
- {
- int count = u16_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else if (has_width)
- {
- /* Use the entire string, and count the number of
- characters. */
- arg_end = arg;
- characters = 0;
- for (;;)
- {
- int count = u16_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else
- {
- /* Use the entire string. */
- arg_end = arg + u16_strlen (arg);
- /* The number of characters doesn't matter. */
- characters = 0;
- }
-
- if (has_width && width > characters
- && !(dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
+ if (has_width && width > characters
+ && (dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+ }
+ break;
+
+ case TYPE_U16_STRING:
+ {
+ const uint16_t *arg = a.arg[dp->arg_index].a.a_u16_string;
+ const uint16_t *arg_end;
+ size_t characters;
+
+ if (has_precision)
+ {
+ /* Use only PRECISION characters, from the left. */
+ arg_end = arg;
+ characters = 0;
+ for (; precision > 0; precision--)
+ {
+ int count = u16_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else if (has_width)
+ {
+ /* Use the entire string, and count the number of
+ characters. */
+ arg_end = arg;
+ characters = 0;
+ for (;;)
+ {
+ int count = u16_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else
+ {
+ /* Use the entire string. */
+ arg_end = arg + u16_strlen (arg);
+ /* The number of characters doesn't matter. */
+ characters = 0;
+ }
+
+ if (has_width && width > characters
+ && !(dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
# if DCHAR_IS_UINT16_T
- {
- size_t n = arg_end - arg;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_CPY (result + length, arg, n);
- length += n;
- }
+ {
+ size_t n = arg_end - arg;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_CPY (result + length, arg, n);
+ length += n;
+ }
# else
- { /* Convert. */
- DCHAR_T *converted = result + length;
- size_t converted_len = allocated - length;
+ { /* Convert. */
+ DCHAR_T *converted = result + length;
+ size_t converted_len = allocated - length;
# if DCHAR_IS_TCHAR
- /* Convert from UTF-16 to locale encoding. */
- if (u16_conv_to_encoding (locale_charset (),
- iconveh_question_mark,
- arg, arg_end - arg, NULL,
- &converted, &converted_len)
- < 0)
+ /* Convert from UTF-16 to locale encoding. */
+ converted =
+ u16_conv_to_encoding (locale_charset (),
+ iconveh_question_mark,
+ arg, arg_end - arg, NULL,
+ converted, &converted_len);
# else
- /* Convert from UTF-16 to UTF-8/UTF-32. */
- converted =
- U16_TO_DCHAR (arg, arg_end - arg,
- converted, &converted_len);
- if (converted == NULL)
+ /* Convert from UTF-16 to UTF-8/UTF-32. */
+ converted =
+ U16_TO_DCHAR (arg, arg_end - arg,
+ converted, &converted_len);
# endif
- {
- int saved_errno = errno;
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = saved_errno;
- return NULL;
- }
- if (converted != result + length)
- {
- ENSURE_ALLOCATION (xsum (length, converted_len));
- DCHAR_CPY (result + length, converted, converted_len);
- free (converted);
- }
- length += converted_len;
- }
+ if (converted == NULL)
+ {
+ int saved_errno = errno;
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = saved_errno;
+ return NULL;
+ }
+ if (converted != result + length)
+ {
+ ENSURE_ALLOCATION (xsum (length, converted_len));
+ DCHAR_CPY (result + length, converted, converted_len);
+ free (converted);
+ }
+ length += converted_len;
+ }
# endif
- if (has_width && width > characters
- && (dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
- }
- break;
-
- case TYPE_U32_STRING:
- {
- const uint32_t *arg = a.arg[dp->arg_index].a.a_u32_string;
- const uint32_t *arg_end;
- size_t characters;
-
- if (has_precision)
- {
- /* Use only PRECISION characters, from the left. */
- arg_end = arg;
- characters = 0;
- for (; precision > 0; precision--)
- {
- int count = u32_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else if (has_width)
- {
- /* Use the entire string, and count the number of
- characters. */
- arg_end = arg;
- characters = 0;
- for (;;)
- {
- int count = u32_strmblen (arg_end);
- if (count == 0)
- break;
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
- arg_end += count;
- characters++;
- }
- }
- else
- {
- /* Use the entire string. */
- arg_end = arg + u32_strlen (arg);
- /* The number of characters doesn't matter. */
- characters = 0;
- }
-
- if (has_width && width > characters
- && !(dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
+ if (has_width && width > characters
+ && (dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+ }
+ break;
+
+ case TYPE_U32_STRING:
+ {
+ const uint32_t *arg = a.arg[dp->arg_index].a.a_u32_string;
+ const uint32_t *arg_end;
+ size_t characters;
+
+ if (has_precision)
+ {
+ /* Use only PRECISION characters, from the left. */
+ arg_end = arg;
+ characters = 0;
+ for (; precision > 0; precision--)
+ {
+ int count = u32_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else if (has_width)
+ {
+ /* Use the entire string, and count the number of
+ characters. */
+ arg_end = arg;
+ characters = 0;
+ for (;;)
+ {
+ int count = u32_strmblen (arg_end);
+ if (count == 0)
+ break;
+ if (count < 0)
+ {
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else
+ {
+ /* Use the entire string. */
+ arg_end = arg + u32_strlen (arg);
+ /* The number of characters doesn't matter. */
+ characters = 0;
+ }
+
+ if (has_width && width > characters
+ && !(dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
# if DCHAR_IS_UINT32_T
- {
- size_t n = arg_end - arg;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_CPY (result + length, arg, n);
- length += n;
- }
+ {
+ size_t n = arg_end - arg;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_CPY (result + length, arg, n);
+ length += n;
+ }
# else
- { /* Convert. */
- DCHAR_T *converted = result + length;
- size_t converted_len = allocated - length;
+ { /* Convert. */
+ DCHAR_T *converted = result + length;
+ size_t converted_len = allocated - length;
# if DCHAR_IS_TCHAR
- /* Convert from UTF-32 to locale encoding. */
- if (u32_conv_to_encoding (locale_charset (),
- iconveh_question_mark,
- arg, arg_end - arg, NULL,
- &converted, &converted_len)
- < 0)
+ /* Convert from UTF-32 to locale encoding. */
+ converted =
+ u32_conv_to_encoding (locale_charset (),
+ iconveh_question_mark,
+ arg, arg_end - arg, NULL,
+ converted, &converted_len);
# else
- /* Convert from UTF-32 to UTF-8/UTF-16. */
- converted =
- U32_TO_DCHAR (arg, arg_end - arg,
- converted, &converted_len);
- if (converted == NULL)
+ /* Convert from UTF-32 to UTF-8/UTF-16. */
+ converted =
+ U32_TO_DCHAR (arg, arg_end - arg,
+ converted, &converted_len);
# endif
- {
- int saved_errno = errno;
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = saved_errno;
- return NULL;
- }
- if (converted != result + length)
- {
- ENSURE_ALLOCATION (xsum (length, converted_len));
- DCHAR_CPY (result + length, converted, converted_len);
- free (converted);
- }
- length += converted_len;
- }
+ if (converted == NULL)
+ {
+ int saved_errno = errno;
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = saved_errno;
+ return NULL;
+ }
+ if (converted != result + length)
+ {
+ ENSURE_ALLOCATION (xsum (length, converted_len));
+ DCHAR_CPY (result + length, converted, converted_len);
+ free (converted);
+ }
+ length += converted_len;
+ }
# endif
- if (has_width && width > characters
- && (dp->flags & FLAG_LEFT))
- {
- size_t n = width - characters;
- ENSURE_ALLOCATION (xsum (length, n));
- DCHAR_SET (result + length, ' ', n);
- length += n;
- }
- }
- break;
-
- default:
- abort ();
- }
- }
+ if (has_width && width > characters
+ && (dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+ }
+ break;
+
+ default:
+ abort ();
+ }
+ }
#endif
-#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
- else if (dp->conversion == 'a' || dp->conversion == 'A')
- {
- arg_type type = a.arg[dp->arg_index].type;
- int flags = dp->flags;
- int has_width;
- size_t width;
- int has_precision;
- size_t precision;
- size_t tmp_length;
- DCHAR_T tmpbuf[700];
- DCHAR_T *tmp;
- DCHAR_T *pad_ptr;
- DCHAR_T *p;
-
- has_width = 0;
- width = 0;
- if (dp->width_start != dp->width_end)
- {
- if (dp->width_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->width_arg_index].a.a_int;
- if (arg < 0)
- {
- /* "A negative field width is taken as a '-' flag
- followed by a positive field width." */
- flags |= FLAG_LEFT;
- width = (unsigned int) (-arg);
- }
- else
- width = arg;
- }
- else
- {
- const FCHAR_T *digitp = dp->width_start;
-
- do
- width = xsum (xtimes (width, 10), *digitp++ - '0');
- while (digitp != dp->width_end);
- }
- has_width = 1;
- }
-
- has_precision = 0;
- precision = 0;
- if (dp->precision_start != dp->precision_end)
- {
- if (dp->precision_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->precision_arg_index].a.a_int;
- /* "A negative precision is taken as if the precision
- were omitted." */
- if (arg >= 0)
- {
- precision = arg;
- has_precision = 1;
- }
- }
- else
- {
- const FCHAR_T *digitp = dp->precision_start + 1;
-
- precision = 0;
- while (digitp != dp->precision_end)
- precision = xsum (xtimes (precision, 10), *digitp++ - '0');
- has_precision = 1;
- }
- }
-
- /* Allocate a temporary buffer of sufficient size. */
- if (type == TYPE_LONGDOUBLE)
- tmp_length =
- (unsigned int) ((LDBL_DIG + 1)
- * 0.831 /* decimal -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- else
- tmp_length =
- (unsigned int) ((DBL_DIG + 1)
- * 0.831 /* decimal -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- if (tmp_length < precision)
- tmp_length = precision;
- /* Account for sign, decimal point etc. */
- tmp_length = xsum (tmp_length, 12);
-
- if (tmp_length < width)
- tmp_length = width;
-
- tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
-
- if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
- tmp = tmpbuf;
- else
- {
- size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
-
- if (size_overflow_p (tmp_memsize))
- /* Overflow, would lead to out of memory. */
- goto out_of_memory;
- tmp = (DCHAR_T *) malloc (tmp_memsize);
- if (tmp == NULL)
- /* Out of memory. */
- goto out_of_memory;
- }
-
- pad_ptr = NULL;
- p = tmp;
- if (type == TYPE_LONGDOUBLE)
- {
- long double arg = a.arg[dp->arg_index].a.a_longdouble;
-
- if (isnanl (arg))
- {
- if (dp->conversion == 'A')
- {
- *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
- }
- else
- {
- *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
- }
- }
- else
- {
- int sign = 0;
- DECL_LONG_DOUBLE_ROUNDING
-
- BEGIN_LONG_DOUBLE_ROUNDING ();
-
- if (signbit (arg)) /* arg < 0.0L or negative zero */
- {
- sign = -1;
- arg = -arg;
- }
-
- if (sign < 0)
- *p++ = '-';
- else if (flags & FLAG_SHOWSIGN)
- *p++ = '+';
- else if (flags & FLAG_SPACE)
- *p++ = ' ';
-
- if (arg > 0.0L && arg + arg == arg)
- {
- if (dp->conversion == 'A')
- {
- *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
- }
- else
- {
- *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
- }
- }
- else
- {
- int exponent;
- long double mantissa;
-
- if (arg > 0.0L)
- mantissa = printf_frexpl (arg, &exponent);
- else
- {
- exponent = 0;
- mantissa = 0.0L;
- }
-
- if (has_precision
- && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
- {
- /* Round the mantissa. */
- long double tail = mantissa;
- size_t q;
-
- for (q = precision; ; q--)
- {
- int digit = (int) tail;
- tail -= digit;
- if (q == 0)
- {
- if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
- tail = 1 - tail;
- else
- tail = - tail;
- break;
- }
- tail *= 16.0L;
- }
- if (tail != 0.0L)
- for (q = precision; q > 0; q--)
- tail *= 0.0625L;
- mantissa += tail;
- }
-
- *p++ = '0';
- *p++ = dp->conversion - 'A' + 'X';
- pad_ptr = p;
- {
- int digit;
-
- digit = (int) mantissa;
- mantissa -= digit;
- *p++ = '0' + digit;
- if ((flags & FLAG_ALT)
- || mantissa > 0.0L || precision > 0)
- {
- *p++ = decimal_point_char ();
- /* This loop terminates because we assume
- that FLT_RADIX is a power of 2. */
- while (mantissa > 0.0L)
- {
- mantissa *= 16.0L;
- digit = (int) mantissa;
- mantissa -= digit;
- *p++ = digit
- + (digit < 10
- ? '0'
- : dp->conversion - 10);
- if (precision > 0)
- precision--;
- }
- while (precision > 0)
- {
- *p++ = '0';
- precision--;
- }
- }
- }
- *p++ = dp->conversion - 'A' + 'P';
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
+ else if (dp->conversion == 's'
# if WIDE_CHAR_VERSION
- {
- static const wchar_t decimal_format[] =
- { '%', '+', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
- }
- while (*p != '\0')
- p++;
+ && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
# else
- if (sizeof (DCHAR_T) == 1)
- {
- sprintf ((char *) p, "%+d", exponent);
- while (*p != '\0')
- p++;
- }
- else
- {
- char expbuf[6 + 1];
- const char *ep;
- sprintf (expbuf, "%+d", exponent);
- for (ep = expbuf; (*p = *ep) != '\0'; ep++)
- p++;
- }
+ && a.arg[dp->arg_index].type == TYPE_WIDE_STRING
# endif
- }
-
- END_LONG_DOUBLE_ROUNDING ();
- }
- }
- else
- {
- double arg = a.arg[dp->arg_index].a.a_double;
-
- if (isnan (arg))
- {
- if (dp->conversion == 'A')
- {
- *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
- }
- else
- {
- *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
- }
- }
- else
- {
- int sign = 0;
-
- if (signbit (arg)) /* arg < 0.0 or negative zero */
- {
- sign = -1;
- arg = -arg;
- }
-
- if (sign < 0)
- *p++ = '-';
- else if (flags & FLAG_SHOWSIGN)
- *p++ = '+';
- else if (flags & FLAG_SPACE)
- *p++ = ' ';
-
- if (arg > 0.0 && arg + arg == arg)
- {
- if (dp->conversion == 'A')
- {
- *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
- }
- else
- {
- *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
- }
- }
- else
- {
- int exponent;
- double mantissa;
-
- if (arg > 0.0)
- mantissa = printf_frexp (arg, &exponent);
- else
- {
- exponent = 0;
- mantissa = 0.0;
- }
-
- if (has_precision
- && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
- {
- /* Round the mantissa. */
- double tail = mantissa;
- size_t q;
-
- for (q = precision; ; q--)
- {
- int digit = (int) tail;
- tail -= digit;
- if (q == 0)
- {
- if (digit & 1 ? tail >= 0.5 : tail > 0.5)
- tail = 1 - tail;
- else
- tail = - tail;
- break;
- }
- tail *= 16.0;
- }
- if (tail != 0.0)
- for (q = precision; q > 0; q--)
- tail *= 0.0625;
- mantissa += tail;
- }
-
- *p++ = '0';
- *p++ = dp->conversion - 'A' + 'X';
- pad_ptr = p;
- {
- int digit;
-
- digit = (int) mantissa;
- mantissa -= digit;
- *p++ = '0' + digit;
- if ((flags & FLAG_ALT)
- || mantissa > 0.0 || precision > 0)
- {
- *p++ = decimal_point_char ();
- /* This loop terminates because we assume
- that FLT_RADIX is a power of 2. */
- while (mantissa > 0.0)
- {
- mantissa *= 16.0;
- digit = (int) mantissa;
- mantissa -= digit;
- *p++ = digit
- + (digit < 10
- ? '0'
- : dp->conversion - 10);
- if (precision > 0)
- precision--;
- }
- while (precision > 0)
- {
- *p++ = '0';
- precision--;
- }
- }
- }
- *p++ = dp->conversion - 'A' + 'P';
+ )
+ {
+ /* The normal handling of the 's' directive below requires
+ allocating a temporary buffer. The determination of its
+ length (tmp_length), in the case when a precision is
+ specified, below requires a conversion between a char[]
+ string and a wchar_t[] wide string. It could be done, but
+ we have no guarantee that the implementation of sprintf will
+ use the exactly same algorithm. Without this guarantee, it
+ is possible to have buffer overrun bugs. In order to avoid
+ such bugs, we implement the entire processing of the 's'
+ directive ourselves. */
+ int flags = dp->flags;
+ int has_width;
+ size_t width;
+ int has_precision;
+ size_t precision;
+
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
+
+ has_precision = 0;
+ precision = 6;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+
# if WIDE_CHAR_VERSION
- {
- static const wchar_t decimal_format[] =
- { '%', '+', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
- }
- while (*p != '\0')
- p++;
+ /* %s in vasnwprintf. See the specification of fwprintf. */
+ {
+ const char *arg = a.arg[dp->arg_index].a.a_string;
+ const char *arg_end;
+ size_t characters;
+
+ if (has_precision)
+ {
+ /* Use only as many bytes as needed to produce PRECISION
+ wide characters, from the left. */
+# if HAVE_MBRTOWC
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ arg_end = arg;
+ characters = 0;
+ for (; precision > 0; precision--)
+ {
+ int count;
+# if HAVE_MBRTOWC
+ count = mbrlen (arg_end, MB_CUR_MAX, &state);
+# else
+ count = mblen (arg_end, MB_CUR_MAX);
+# endif
+ if (count == 0)
+ /* Found the terminating NUL. */
+ break;
+ if (count < 0)
+ {
+ /* Invalid or incomplete multibyte character. */
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else if (has_width)
+ {
+ /* Use the entire string, and count the number of wide
+ characters. */
+# if HAVE_MBRTOWC
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ arg_end = arg;
+ characters = 0;
+ for (;;)
+ {
+ int count;
+# if HAVE_MBRTOWC
+ count = mbrlen (arg_end, MB_CUR_MAX, &state);
+# else
+ count = mblen (arg_end, MB_CUR_MAX);
+# endif
+ if (count == 0)
+ /* Found the terminating NUL. */
+ break;
+ if (count < 0)
+ {
+ /* Invalid or incomplete multibyte character. */
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end += count;
+ characters++;
+ }
+ }
+ else
+ {
+ /* Use the entire string. */
+ arg_end = arg + strlen (arg);
+ /* The number of characters doesn't matter. */
+ characters = 0;
+ }
+
+ if (has_width && width > characters
+ && !(dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+
+ if (has_precision || has_width)
+ {
+ /* We know the number of wide characters in advance. */
+ size_t remaining;
+# if HAVE_MBRTOWC
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ ENSURE_ALLOCATION (xsum (length, characters));
+ for (remaining = characters; remaining > 0; remaining--)
+ {
+ wchar_t wc;
+ int count;
+# if HAVE_MBRTOWC
+ count = mbrtowc (&wc, arg, arg_end - arg, &state);
+# else
+ count = mbtowc (&wc, arg, arg_end - arg);
+# endif
+ if (count <= 0)
+ /* mbrtowc not consistent with mbrlen, or mbtowc
+ not consistent with mblen. */
+ abort ();
+ result[length++] = wc;
+ arg += count;
+ }
+ if (!(arg == arg_end))
+ abort ();
+ }
+ else
+ {
+# if HAVE_MBRTOWC
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ while (arg < arg_end)
+ {
+ wchar_t wc;
+ int count;
+# if HAVE_MBRTOWC
+ count = mbrtowc (&wc, arg, arg_end - arg, &state);
+# else
+ count = mbtowc (&wc, arg, arg_end - arg);
+# endif
+ if (count <= 0)
+ /* mbrtowc not consistent with mbrlen, or mbtowc
+ not consistent with mblen. */
+ abort ();
+ ENSURE_ALLOCATION (xsum (length, 1));
+ result[length++] = wc;
+ arg += count;
+ }
+ }
+
+ if (has_width && width > characters
+ && (dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - characters;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+ }
+# else
+ /* %ls in vasnprintf. See the specification of fprintf. */
+ {
+ const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+ const wchar_t *arg_end;
+ size_t characters;
+# if !DCHAR_IS_TCHAR
+ /* This code assumes that TCHAR_T is 'char'. */
+ verify (sizeof (TCHAR_T) == 1);
+ TCHAR_T *tmpsrc;
+ DCHAR_T *tmpdst;
+ size_t tmpdst_len;
+# endif
+ size_t w;
+
+ if (has_precision)
+ {
+ /* Use only as many wide characters as needed to produce
+ at most PRECISION bytes, from the left. */
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ arg_end = arg;
+ characters = 0;
+ while (precision > 0)
+ {
+ char cbuf[64]; /* Assume MB_CUR_MAX <= 64. */
+ int count;
+
+ if (*arg_end == 0)
+ /* Found the terminating null wide character. */
+ break;
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ count = wcrtomb (cbuf, *arg_end, &state);
+# else
+ count = wctomb (cbuf, *arg_end);
+# endif
+ if (count < 0)
+ {
+ /* Cannot convert. */
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ if (precision < count)
+ break;
+ arg_end++;
+ characters += count;
+ precision -= count;
+ }
+ }
+# if DCHAR_IS_TCHAR
+ else if (has_width)
+# else
+ else
+# endif
+ {
+ /* Use the entire string, and count the number of
+ bytes. */
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ arg_end = arg;
+ characters = 0;
+ for (;;)
+ {
+ char cbuf[64]; /* Assume MB_CUR_MAX <= 64. */
+ int count;
+
+ if (*arg_end == 0)
+ /* Found the terminating null wide character. */
+ break;
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ count = wcrtomb (cbuf, *arg_end, &state);
+# else
+ count = wctomb (cbuf, *arg_end);
+# endif
+ if (count < 0)
+ {
+ /* Cannot convert. */
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ arg_end++;
+ characters += count;
+ }
+ }
+# if DCHAR_IS_TCHAR
+ else
+ {
+ /* Use the entire string. */
+ arg_end = arg + local_wcslen (arg);
+ /* The number of bytes doesn't matter. */
+ characters = 0;
+ }
+# endif
+
+# if !DCHAR_IS_TCHAR
+ /* Convert the string into a piece of temporary memory. */
+ tmpsrc = (TCHAR_T *) malloc (characters * sizeof (TCHAR_T));
+ if (tmpsrc == NULL)
+ goto out_of_memory;
+ {
+ TCHAR_T *tmpptr = tmpsrc;
+ size_t remaining;
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ for (remaining = characters; remaining > 0; )
+ {
+ char cbuf[64]; /* Assume MB_CUR_MAX <= 64. */
+ int count;
+
+ if (*arg == 0)
+ abort ();
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ count = wcrtomb (cbuf, *arg, &state);
+# else
+ count = wctomb (cbuf, *arg);
+# endif
+ if (count <= 0)
+ /* Inconsistency. */
+ abort ();
+ memcpy (tmpptr, cbuf, count);
+ tmpptr += count;
+ arg++;
+ remaining -= count;
+ }
+ if (!(arg == arg_end))
+ abort ();
+ }
+
+ /* Convert from TCHAR_T[] to DCHAR_T[]. */
+ tmpdst =
+ DCHAR_CONV_FROM_ENCODING (locale_charset (),
+ iconveh_question_mark,
+ tmpsrc, characters,
+ NULL,
+ NULL, &tmpdst_len);
+ if (tmpdst == NULL)
+ {
+ int saved_errno = errno;
+ free (tmpsrc);
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = saved_errno;
+ return NULL;
+ }
+ free (tmpsrc);
+# endif
+
+ if (has_width)
+ {
+# if ENABLE_UNISTDIO
+ /* Outside POSIX, it's preferable to compare the width
+ against the number of _characters_ of the converted
+ value. */
+ w = DCHAR_MBSNLEN (result + length, characters);
+# else
+ /* The width is compared against the number of _bytes_
+ of the converted value, says POSIX. */
+ w = characters;
+# endif
+ }
+ else
+ /* w doesn't matter. */
+ w = 0;
+
+ if (has_width && width > w
+ && !(dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - w;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+
+# if DCHAR_IS_TCHAR
+ if (has_precision || has_width)
+ {
+ /* We know the number of bytes in advance. */
+ size_t remaining;
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ ENSURE_ALLOCATION (xsum (length, characters));
+ for (remaining = characters; remaining > 0; )
+ {
+ char cbuf[64]; /* Assume MB_CUR_MAX <= 64. */
+ int count;
+
+ if (*arg == 0)
+ abort ();
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ count = wcrtomb (cbuf, *arg, &state);
+# else
+ count = wctomb (cbuf, *arg);
+# endif
+ if (count <= 0)
+ /* Inconsistency. */
+ abort ();
+ memcpy (result + length, cbuf, count);
+ length += count;
+ arg++;
+ remaining -= count;
+ }
+ if (!(arg == arg_end))
+ abort ();
+ }
+ else
+ {
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ mbstate_t state;
+ memset (&state, '\0', sizeof (mbstate_t));
+# endif
+ while (arg < arg_end)
+ {
+ char cbuf[64]; /* Assume MB_CUR_MAX <= 64. */
+ int count;
+
+ if (*arg == 0)
+ abort ();
+# if HAVE_WCRTOMB && !defined GNULIB_defined_mbstate_t
+ count = wcrtomb (cbuf, *arg, &state);
+# else
+ count = wctomb (cbuf, *arg);
+# endif
+ if (count <= 0)
+ {
+ /* Cannot convert. */
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = EILSEQ;
+ return NULL;
+ }
+ ENSURE_ALLOCATION (xsum (length, count));
+ memcpy (result + length, cbuf, count);
+ length += count;
+ arg++;
+ }
+ }
+# else
+ ENSURE_ALLOCATION (xsum (length, tmpdst_len));
+ DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+ free (tmpdst);
+ length += tmpdst_len;
+# endif
+
+ if (has_width && width > w
+ && (dp->flags & FLAG_LEFT))
+ {
+ size_t n = width - w;
+ ENSURE_ALLOCATION (xsum (length, n));
+ DCHAR_SET (result + length, ' ', n);
+ length += n;
+ }
+ }
+# endif
+ }
+#endif
+#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
+ else if ((dp->conversion == 'a' || dp->conversion == 'A')
+# if !(NEED_PRINTF_DIRECTIVE_A || (NEED_PRINTF_LONG_DOUBLE && NEED_PRINTF_DOUBLE))
+ && (0
+# if NEED_PRINTF_DOUBLE
+ || a.arg[dp->arg_index].type == TYPE_DOUBLE
+# endif
+# if NEED_PRINTF_LONG_DOUBLE
+ || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+# endif
+ )
+# endif
+ )
+ {
+ arg_type type = a.arg[dp->arg_index].type;
+ int flags = dp->flags;
+ int has_width;
+ size_t width;
+ int has_precision;
+ size_t precision;
+ size_t tmp_length;
+ DCHAR_T tmpbuf[700];
+ DCHAR_T *tmp;
+ DCHAR_T *pad_ptr;
+ DCHAR_T *p;
+
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
+
+ has_precision = 0;
+ precision = 0;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+
+ /* Allocate a temporary buffer of sufficient size. */
+ if (type == TYPE_LONGDOUBLE)
+ tmp_length =
+ (unsigned int) ((LDBL_DIG + 1)
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+ tmp_length =
+ (unsigned int) ((DBL_DIG + 1)
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Account for sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, 12);
+
+ if (tmp_length < width)
+ tmp_length = width;
+
+ tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+ if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
+ tmp = tmpbuf;
+ else
+ {
+ size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
+
+ if (size_overflow_p (tmp_memsize))
+ /* Overflow, would lead to out of memory. */
+ goto out_of_memory;
+ tmp = (DCHAR_T *) malloc (tmp_memsize);
+ if (tmp == NULL)
+ /* Out of memory. */
+ goto out_of_memory;
+ }
+
+ pad_ptr = NULL;
+ p = tmp;
+ if (type == TYPE_LONGDOUBLE)
+ {
+# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE
+ long double arg = a.arg[dp->arg_index].a.a_longdouble;
+
+ if (isnanl (arg))
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+ DECL_LONG_DOUBLE_ROUNDING
+
+ BEGIN_LONG_DOUBLE_ROUNDING ();
+
+ if (signbit (arg)) /* arg < 0.0L or negative zero */
+ {
+ sign = -1;
+ arg = -arg;
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0L && arg + arg == arg)
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
+ int exponent;
+ long double mantissa;
+
+ if (arg > 0.0L)
+ mantissa = printf_frexpl (arg, &exponent);
+ else
+ {
+ exponent = 0;
+ mantissa = 0.0L;
+ }
+
+ if (has_precision
+ && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
+ {
+ /* Round the mantissa. */
+ long double tail = mantissa;
+ size_t q;
+
+ for (q = precision; ; q--)
+ {
+ int digit = (int) tail;
+ tail -= digit;
+ if (q == 0)
+ {
+ if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
+ tail = 1 - tail;
+ else
+ tail = - tail;
+ break;
+ }
+ tail *= 16.0L;
+ }
+ if (tail != 0.0L)
+ for (q = precision; q > 0; q--)
+ tail *= 0.0625L;
+ mantissa += tail;
+ }
+
+ *p++ = '0';
+ *p++ = dp->conversion - 'A' + 'X';
+ pad_ptr = p;
+ {
+ int digit;
+
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = '0' + digit;
+ if ((flags & FLAG_ALT)
+ || mantissa > 0.0L || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ /* This loop terminates because we assume
+ that FLT_RADIX is a power of 2. */
+ while (mantissa > 0.0L)
+ {
+ mantissa *= 16.0L;
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = digit
+ + (digit < 10
+ ? '0'
+ : dp->conversion - 10);
+ if (precision > 0)
+ precision--;
+ }
+ while (precision > 0)
+ {
+ *p++ = '0';
+ precision--;
+ }
+ }
+ }
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
+# else
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, "%+d", exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, "%+d", exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
+# endif
+ }
+
+ END_LONG_DOUBLE_ROUNDING ();
+ }
# else
- if (sizeof (DCHAR_T) == 1)
- {
- sprintf ((char *) p, "%+d", exponent);
- while (*p != '\0')
- p++;
- }
- else
- {
- char expbuf[6 + 1];
- const char *ep;
- sprintf (expbuf, "%+d", exponent);
- for (ep = expbuf; (*p = *ep) != '\0'; ep++)
- p++;
- }
+ abort ();
# endif
- }
- }
- }
- /* The generated string now extends from tmp to p, with the
- zero padding insertion point being at pad_ptr. */
- if (has_width && p - tmp < width)
- {
- size_t pad = width - (p - tmp);
- DCHAR_T *end = p + pad;
-
- if (flags & FLAG_LEFT)
- {
- /* Pad with spaces on the right. */
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
- else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
- {
- /* Pad with zeroes. */
- DCHAR_T *q = end;
-
- while (p > pad_ptr)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = '0';
- }
- else
- {
- /* Pad with spaces on the left. */
- DCHAR_T *q = end;
-
- while (p > tmp)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
-
- p = end;
- }
-
- {
- size_t count = p - tmp;
-
- if (count >= tmp_length)
- /* tmp_length was incorrectly calculated - fix the
- code above! */
- abort ();
-
- /* Make room for the result. */
- if (count >= allocated - length)
- {
- size_t n = xsum (length, count);
-
- ENSURE_ALLOCATION (n);
- }
-
- /* Append the result. */
- memcpy (result + length, tmp, count * sizeof (DCHAR_T));
- if (tmp != tmpbuf)
- free (tmp);
- length += count;
- }
- }
+ }
+ else
+ {
+# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_DOUBLE
+ double arg = a.arg[dp->arg_index].a.a_double;
+
+ if (isnand (arg))
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+
+ if (signbit (arg)) /* arg < 0.0 or negative zero */
+ {
+ sign = -1;
+ arg = -arg;
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0 && arg + arg == arg)
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
+ int exponent;
+ double mantissa;
+
+ if (arg > 0.0)
+ mantissa = printf_frexp (arg, &exponent);
+ else
+ {
+ exponent = 0;
+ mantissa = 0.0;
+ }
+
+ if (has_precision
+ && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
+ {
+ /* Round the mantissa. */
+ double tail = mantissa;
+ size_t q;
+
+ for (q = precision; ; q--)
+ {
+ int digit = (int) tail;
+ tail -= digit;
+ if (q == 0)
+ {
+ if (digit & 1 ? tail >= 0.5 : tail > 0.5)
+ tail = 1 - tail;
+ else
+ tail = - tail;
+ break;
+ }
+ tail *= 16.0;
+ }
+ if (tail != 0.0)
+ for (q = precision; q > 0; q--)
+ tail *= 0.0625;
+ mantissa += tail;
+ }
+
+ *p++ = '0';
+ *p++ = dp->conversion - 'A' + 'X';
+ pad_ptr = p;
+ {
+ int digit;
+
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = '0' + digit;
+ if ((flags & FLAG_ALT)
+ || mantissa > 0.0 || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ /* This loop terminates because we assume
+ that FLT_RADIX is a power of 2. */
+ while (mantissa > 0.0)
+ {
+ mantissa *= 16.0;
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = digit
+ + (digit < 10
+ ? '0'
+ : dp->conversion - 10);
+ if (precision > 0)
+ precision--;
+ }
+ while (precision > 0)
+ {
+ *p++ = '0';
+ precision--;
+ }
+ }
+ }
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
+# else
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, "%+d", exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, "%+d", exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
+# endif
+ }
+ }
+# else
+ abort ();
+# endif
+ }
+ /* The generated string now extends from tmp to p, with the
+ zero padding insertion point being at pad_ptr. */
+ if (has_width && p - tmp < width)
+ {
+ size_t pad = width - (p - tmp);
+ DCHAR_T *end = p + pad;
+
+ if (flags & FLAG_LEFT)
+ {
+ /* Pad with spaces on the right. */
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+ else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+ {
+ /* Pad with zeroes. */
+ DCHAR_T *q = end;
+
+ while (p > pad_ptr)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = '0';
+ }
+ else
+ {
+ /* Pad with spaces on the left. */
+ DCHAR_T *q = end;
+
+ while (p > tmp)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+
+ p = end;
+ }
+
+ {
+ size_t count = p - tmp;
+
+ if (count >= tmp_length)
+ /* tmp_length was incorrectly calculated - fix the
+ code above! */
+ abort ();
+
+ /* Make room for the result. */
+ if (count >= allocated - length)
+ {
+ size_t n = xsum (length, count);
+
+ ENSURE_ALLOCATION (n);
+ }
+
+ /* Append the result. */
+ memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+ if (tmp != tmpbuf)
+ free (tmp);
+ length += count;
+ }
+ }
#endif
-#if (NEED_PRINTF_INFINITE_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
- else if ((dp->conversion == 'f' || dp->conversion == 'F'
- || dp->conversion == 'e' || dp->conversion == 'E'
- || dp->conversion == 'g' || dp->conversion == 'G'
- || dp->conversion == 'a' || dp->conversion == 'A')
- && (0
-# if NEED_PRINTF_INFINITE_DOUBLE
- || (a.arg[dp->arg_index].type == TYPE_DOUBLE
- /* The systems (mingw) which produce wrong output
- for Inf, -Inf, and NaN also do so for -0.0.
- Therefore we treat this case here as well. */
- && is_infinite_or_zero (a.arg[dp->arg_index].a.a_double))
+#if (NEED_PRINTF_INFINITE_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
+ else if ((dp->conversion == 'f' || dp->conversion == 'F'
+ || dp->conversion == 'e' || dp->conversion == 'E'
+ || dp->conversion == 'g' || dp->conversion == 'G'
+ || dp->conversion == 'a' || dp->conversion == 'A')
+ && (0
+# if NEED_PRINTF_DOUBLE
+ || a.arg[dp->arg_index].type == TYPE_DOUBLE
+# elif NEED_PRINTF_INFINITE_DOUBLE
+ || (a.arg[dp->arg_index].type == TYPE_DOUBLE
+ /* The systems (mingw) which produce wrong output
+ for Inf, -Inf, and NaN also do so for -0.0.
+ Therefore we treat this case here as well. */
+ && is_infinite_or_zero (a.arg[dp->arg_index].a.a_double))
# endif
# if NEED_PRINTF_LONG_DOUBLE
- || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+ || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
# elif NEED_PRINTF_INFINITE_LONG_DOUBLE
- || (a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
- /* Some systems produce wrong output for Inf,
- -Inf, and NaN. */
- && is_infinitel (a.arg[dp->arg_index].a.a_longdouble))
+ || (a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
+ /* Some systems produce wrong output for Inf,
+ -Inf, and NaN. Some systems in this category
+ (IRIX 5.3) also do so for -0.0. Therefore we
+ treat this case here as well. */
+ && is_infinite_or_zerol (a.arg[dp->arg_index].a.a_longdouble))
# endif
- ))
- {
-# if NEED_PRINTF_INFINITE_DOUBLE && (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE)
- arg_type type = a.arg[dp->arg_index].type;
+ ))
+ {
+# if (NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE) && (NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE)
+ arg_type type = a.arg[dp->arg_index].type;
# endif
- int flags = dp->flags;
- int has_width;
- size_t width;
- int has_precision;
- size_t precision;
- size_t tmp_length;
- DCHAR_T tmpbuf[700];
- DCHAR_T *tmp;
- DCHAR_T *pad_ptr;
- DCHAR_T *p;
-
- has_width = 0;
- width = 0;
- if (dp->width_start != dp->width_end)
- {
- if (dp->width_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->width_arg_index].a.a_int;
- if (arg < 0)
- {
- /* "A negative field width is taken as a '-' flag
- followed by a positive field width." */
- flags |= FLAG_LEFT;
- width = (unsigned int) (-arg);
- }
- else
- width = arg;
- }
- else
- {
- const FCHAR_T *digitp = dp->width_start;
-
- do
- width = xsum (xtimes (width, 10), *digitp++ - '0');
- while (digitp != dp->width_end);
- }
- has_width = 1;
- }
-
- has_precision = 0;
- precision = 0;
- if (dp->precision_start != dp->precision_end)
- {
- if (dp->precision_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->precision_arg_index].a.a_int;
- /* "A negative precision is taken as if the precision
- were omitted." */
- if (arg >= 0)
- {
- precision = arg;
- has_precision = 1;
- }
- }
- else
- {
- const FCHAR_T *digitp = dp->precision_start + 1;
-
- precision = 0;
- while (digitp != dp->precision_end)
- precision = xsum (xtimes (precision, 10), *digitp++ - '0');
- has_precision = 1;
- }
- }
-
- /* POSIX specifies the default precision to be 6 for %f, %F,
- %e, %E, but not for %g, %G. Implementations appear to use
- the same default precision also for %g, %G. */
- if (!has_precision)
- precision = 6;
-
- /* Allocate a temporary buffer of sufficient size. */
-# if NEED_PRINTF_INFINITE_DOUBLE && NEED_PRINTF_LONG_DOUBLE
- tmp_length = (type == TYPE_LONGDOUBLE ? LDBL_DIG + 1 : 0);
+ int flags = dp->flags;
+ int has_width;
+ size_t width;
+ int has_precision;
+ size_t precision;
+ size_t tmp_length;
+ DCHAR_T tmpbuf[700];
+ DCHAR_T *tmp;
+ DCHAR_T *pad_ptr;
+ DCHAR_T *p;
+
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
+
+ has_precision = 0;
+ precision = 0;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+
+ /* POSIX specifies the default precision to be 6 for %f, %F,
+ %e, %E, but not for %g, %G. Implementations appear to use
+ the same default precision also for %g, %G. But for %a, %A,
+ the default precision is 0. */
+ if (!has_precision)
+ if (!(dp->conversion == 'a' || dp->conversion == 'A'))
+ precision = 6;
+
+ /* Allocate a temporary buffer of sufficient size. */
+# if NEED_PRINTF_DOUBLE && NEED_PRINTF_LONG_DOUBLE
+ tmp_length = (type == TYPE_LONGDOUBLE ? LDBL_DIG + 1 : DBL_DIG + 1);
+# elif NEED_PRINTF_INFINITE_DOUBLE && NEED_PRINTF_LONG_DOUBLE
+ tmp_length = (type == TYPE_LONGDOUBLE ? LDBL_DIG + 1 : 0);
# elif NEED_PRINTF_LONG_DOUBLE
- tmp_length = LDBL_DIG + 1;
+ tmp_length = LDBL_DIG + 1;
+# elif NEED_PRINTF_DOUBLE
+ tmp_length = DBL_DIG + 1;
# else
- tmp_length = 0;
+ tmp_length = 0;
# endif
- if (tmp_length < precision)
- tmp_length = precision;
+ if (tmp_length < precision)
+ tmp_length = precision;
# if NEED_PRINTF_LONG_DOUBLE
-# if NEED_PRINTF_INFINITE_DOUBLE
- if (type == TYPE_LONGDOUBLE)
+# if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+ if (type == TYPE_LONGDOUBLE)
+# endif
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ long double arg = a.arg[dp->arg_index].a.a_longdouble;
+ if (!(isnanl (arg) || arg + arg == arg))
+ {
+ /* arg is finite and nonzero. */
+ int exponent = floorlog10l (arg < 0 ? -arg : arg);
+ if (exponent >= 0 && tmp_length < exponent + precision)
+ tmp_length = exponent + precision;
+ }
+ }
+# endif
+# if NEED_PRINTF_DOUBLE
+# if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
+ if (type == TYPE_DOUBLE)
# endif
- if (dp->conversion == 'f' || dp->conversion == 'F')
- {
- long double arg = a.arg[dp->arg_index].a.a_longdouble;
- if (!(isnanl (arg) || arg + arg == arg))
- {
- /* arg is finite and nonzero. */
- int exponent = floorlog10l (arg < 0 ? -arg : arg);
- if (exponent >= 0 && tmp_length < exponent + precision)
- tmp_length = exponent + precision;
- }
- }
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ double arg = a.arg[dp->arg_index].a.a_double;
+ if (!(isnand (arg) || arg + arg == arg))
+ {
+ /* arg is finite and nonzero. */
+ int exponent = floorlog10 (arg < 0 ? -arg : arg);
+ if (exponent >= 0 && tmp_length < exponent + precision)
+ tmp_length = exponent + precision;
+ }
+ }
# endif
- /* Account for sign, decimal point etc. */
- tmp_length = xsum (tmp_length, 12);
+ /* Account for sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, 12);
- if (tmp_length < width)
- tmp_length = width;
+ if (tmp_length < width)
+ tmp_length = width;
- tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+ tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
- if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
- tmp = tmpbuf;
- else
- {
- size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
+ if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
+ tmp = tmpbuf;
+ else
+ {
+ size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));
- if (size_overflow_p (tmp_memsize))
- /* Overflow, would lead to out of memory. */
- goto out_of_memory;
- tmp = (DCHAR_T *) malloc (tmp_memsize);
- if (tmp == NULL)
- /* Out of memory. */
- goto out_of_memory;
- }
+ if (size_overflow_p (tmp_memsize))
+ /* Overflow, would lead to out of memory. */
+ goto out_of_memory;
+ tmp = (DCHAR_T *) malloc (tmp_memsize);
+ if (tmp == NULL)
+ /* Out of memory. */
+ goto out_of_memory;
+ }
- pad_ptr = NULL;
- p = tmp;
+ pad_ptr = NULL;
+ p = tmp;
# if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
-# if NEED_PRINTF_INFINITE_DOUBLE
- if (type == TYPE_LONGDOUBLE)
+# if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+ if (type == TYPE_LONGDOUBLE)
# endif
- {
- long double arg = a.arg[dp->arg_index].a.a_longdouble;
-
- if (isnanl (arg))
- {
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
- {
- *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
- }
- else
- {
- *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
- }
- }
- else
- {
- int sign = 0;
- DECL_LONG_DOUBLE_ROUNDING
-
- BEGIN_LONG_DOUBLE_ROUNDING ();
-
- if (signbit (arg)) /* arg < 0.0L or negative zero */
- {
- sign = -1;
- arg = -arg;
- }
-
- if (sign < 0)
- *p++ = '-';
- else if (flags & FLAG_SHOWSIGN)
- *p++ = '+';
- else if (flags & FLAG_SPACE)
- *p++ = ' ';
-
- if (arg > 0.0L && arg + arg == arg)
- {
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
- {
- *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
- }
- else
- {
- *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
- }
- }
- else
- {
+ {
+ long double arg = a.arg[dp->arg_index].a.a_longdouble;
+
+ if (isnanl (arg))
+ {
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+ DECL_LONG_DOUBLE_ROUNDING
+
+ BEGIN_LONG_DOUBLE_ROUNDING ();
+
+ if (signbit (arg)) /* arg < 0.0L or negative zero */
+ {
+ sign = -1;
+ arg = -arg;
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0L && arg + arg == arg)
+ {
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
# if NEED_PRINTF_LONG_DOUBLE
- pad_ptr = p;
-
- if (dp->conversion == 'f' || dp->conversion == 'F')
- {
- char *digits;
- size_t ndigits;
-
- digits =
- scale10_round_decimal_long_double (arg, precision);
- if (digits == NULL)
- {
- END_LONG_DOUBLE_ROUNDING ();
- goto out_of_memory;
- }
- ndigits = strlen (digits);
-
- if (ndigits > precision)
- do
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- while (ndigits > precision);
- else
- *p++ = '0';
- /* Here ndigits <= precision. */
- if ((flags & FLAG_ALT) || precision > 0)
- {
- *p++ = decimal_point_char ();
- for (; precision > ndigits; precision--)
- *p++ = '0';
- while (ndigits > 0)
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- }
-
- free (digits);
- }
- else if (dp->conversion == 'e' || dp->conversion == 'E')
- {
- int exponent;
-
- if (arg == 0.0L)
- {
- exponent = 0;
- *p++ = '0';
- if ((flags & FLAG_ALT) || precision > 0)
- {
- *p++ = decimal_point_char ();
- for (; precision > 0; precision--)
- *p++ = '0';
- }
- }
- else
- {
- /* arg > 0.0L. */
- int adjusted;
- char *digits;
- size_t ndigits;
-
- exponent = floorlog10l (arg);
- adjusted = 0;
- for (;;)
- {
- digits =
- scale10_round_decimal_long_double (arg,
- (int)precision - exponent);
- if (digits == NULL)
- {
- END_LONG_DOUBLE_ROUNDING ();
- goto out_of_memory;
- }
- ndigits = strlen (digits);
-
- if (ndigits == precision + 1)
- break;
- if (ndigits < precision
- || ndigits > precision + 2)
- /* The exponent was not guessed
- precisely enough. */
- abort ();
- if (adjusted)
- /* None of two values of exponent is
- the right one. Prevent an endless
- loop. */
- abort ();
- free (digits);
- if (ndigits == precision)
- exponent -= 1;
- else
- exponent += 1;
- adjusted = 1;
- }
-
- /* Here ndigits = precision+1. */
- *p++ = digits[--ndigits];
- if ((flags & FLAG_ALT) || precision > 0)
- {
- *p++ = decimal_point_char ();
- while (ndigits > 0)
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- }
-
- free (digits);
- }
-
- *p++ = dp->conversion; /* 'e' or 'E' */
+ pad_ptr = p;
+
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ char *digits;
+ size_t ndigits;
+
+ digits =
+ scale10_round_decimal_long_double (arg, precision);
+ if (digits == NULL)
+ {
+ END_LONG_DOUBLE_ROUNDING ();
+ goto out_of_memory;
+ }
+ ndigits = strlen (digits);
+
+ if (ndigits > precision)
+ do
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ while (ndigits > precision);
+ else
+ *p++ = '0';
+ /* Here ndigits <= precision. */
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > ndigits; precision--)
+ *p++ = '0';
+ while (ndigits > 0)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+
+ free (digits);
+ }
+ else if (dp->conversion == 'e' || dp->conversion == 'E')
+ {
+ int exponent;
+
+ if (arg == 0.0L)
+ {
+ exponent = 0;
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ }
+ else
+ {
+ /* arg > 0.0L. */
+ int adjusted;
+ char *digits;
+ size_t ndigits;
+
+ exponent = floorlog10l (arg);
+ adjusted = 0;
+ for (;;)
+ {
+ digits =
+ scale10_round_decimal_long_double (arg,
+ (int)precision - exponent);
+ if (digits == NULL)
+ {
+ END_LONG_DOUBLE_ROUNDING ();
+ goto out_of_memory;
+ }
+ ndigits = strlen (digits);
+
+ if (ndigits == precision + 1)
+ break;
+ if (ndigits < precision
+ || ndigits > precision + 2)
+ /* The exponent was not guessed
+ precisely enough. */
+ abort ();
+ if (adjusted)
+ /* None of two values of exponent is
+ the right one. Prevent an endless
+ loop. */
+ abort ();
+ free (digits);
+ if (ndigits == precision)
+ exponent -= 1;
+ else
+ exponent += 1;
+ adjusted = 1;
+ }
+ /* Here ndigits = precision+1. */
+ if (is_borderline (digits, precision))
+ {
+ /* Maybe the exponent guess was too high
+ and a smaller exponent can be reached
+ by turning a 10...0 into 9...9x. */
+ char *digits2 =
+ scale10_round_decimal_long_double (arg,
+ (int)precision - exponent + 1);
+ if (digits2 == NULL)
+ {
+ free (digits);
+ END_LONG_DOUBLE_ROUNDING ();
+ goto out_of_memory;
+ }
+ if (strlen (digits2) == precision + 1)
+ {
+ free (digits);
+ digits = digits2;
+ exponent -= 1;
+ }
+ else
+ free (digits2);
+ }
+ /* Here ndigits = precision+1. */
+
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > 0)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+
+ free (digits);
+ }
+
+ *p++ = dp->conversion; /* 'e' or 'E' */
# if WIDE_CHAR_VERSION
- {
- static const wchar_t decimal_format[] =
- { '%', '+', '.', '2', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
- }
- while (*p != '\0')
- p++;
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', '.', '2', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
# else
- if (sizeof (DCHAR_T) == 1)
- {
- sprintf ((char *) p, "%+.2d", exponent);
- while (*p != '\0')
- p++;
- }
- else
- {
- char expbuf[6 + 1];
- const char *ep;
- sprintf (expbuf, "%+.2d", exponent);
- for (ep = expbuf; (*p = *ep) != '\0'; ep++)
- p++;
- }
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, "%+.2d", exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, "%+.2d", exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
# endif
- }
- else if (dp->conversion == 'g' || dp->conversion == 'G')
- {
- if (precision == 0)
- precision = 1;
- /* precision >= 1. */
-
- if (arg == 0.0L)
- /* The exponent is 0, >= -4, < precision.
- Use fixed-point notation. */
- {
- size_t ndigits = precision;
- /* Number of trailing zeroes that have to be
- dropped. */
- size_t nzeroes =
- (flags & FLAG_ALT ? 0 : precision - 1);
-
- --ndigits;
- *p++ = '0';
- if ((flags & FLAG_ALT) || ndigits > nzeroes)
- {
- *p++ = decimal_point_char ();
- while (ndigits > nzeroes)
- {
- --ndigits;
- *p++ = '0';
- }
- }
- }
- else
- {
- /* arg > 0.0L. */
- int exponent;
- int adjusted;
- char *digits;
- size_t ndigits;
- size_t nzeroes;
-
- exponent = floorlog10l (arg);
- adjusted = 0;
- for (;;)
- {
- digits =
- scale10_round_decimal_long_double (arg,
- (int)(precision - 1) - exponent);
- if (digits == NULL)
- {
- END_LONG_DOUBLE_ROUNDING ();
- goto out_of_memory;
- }
- ndigits = strlen (digits);
-
- if (ndigits == precision)
- break;
- if (ndigits < precision - 1
- || ndigits > precision + 1)
- /* The exponent was not guessed
- precisely enough. */
- abort ();
- if (adjusted)
- /* None of two values of exponent is
- the right one. Prevent an endless
- loop. */
- abort ();
- free (digits);
- if (ndigits < precision)
- exponent -= 1;
- else
- exponent += 1;
- adjusted = 1;
- }
- /* Here ndigits = precision. */
-
- /* Determine the number of trailing zeroes
- that have to be dropped. */
- nzeroes = 0;
- if ((flags & FLAG_ALT) == 0)
- while (nzeroes < ndigits
- && digits[nzeroes] == '0')
- nzeroes++;
-
- /* The exponent is now determined. */
- if (exponent >= -4
- && exponent < (long)precision)
- {
- /* Fixed-point notation:
- max(exponent,0)+1 digits, then the
- decimal point, then the remaining
- digits without trailing zeroes. */
- if (exponent >= 0)
- {
- size_t count = exponent + 1;
- /* Note: count <= precision = ndigits. */
- for (; count > 0; count--)
- *p++ = digits[--ndigits];
- if ((flags & FLAG_ALT) || ndigits > nzeroes)
- {
- *p++ = decimal_point_char ();
- while (ndigits > nzeroes)
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- }
- }
- else
- {
- size_t count = -exponent - 1;
- *p++ = '0';
- *p++ = decimal_point_char ();
- for (; count > 0; count--)
- *p++ = '0';
- while (ndigits > nzeroes)
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- }
- }
- else
- {
- /* Exponential notation. */
- *p++ = digits[--ndigits];
- if ((flags & FLAG_ALT) || ndigits > nzeroes)
- {
- *p++ = decimal_point_char ();
- while (ndigits > nzeroes)
- {
- --ndigits;
- *p++ = digits[ndigits];
- }
- }
- *p++ = dp->conversion - 'G' + 'E'; /* 'e' or 'E' */
+ }
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
+ {
+ if (precision == 0)
+ precision = 1;
+ /* precision >= 1. */
+
+ if (arg == 0.0L)
+ /* The exponent is 0, >= -4, < precision.
+ Use fixed-point notation. */
+ {
+ size_t ndigits = precision;
+ /* Number of trailing zeroes that have to be
+ dropped. */
+ size_t nzeroes =
+ (flags & FLAG_ALT ? 0 : precision - 1);
+
+ --ndigits;
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = '0';
+ }
+ }
+ }
+ else
+ {
+ /* arg > 0.0L. */
+ int exponent;
+ int adjusted;
+ char *digits;
+ size_t ndigits;
+ size_t nzeroes;
+
+ exponent = floorlog10l (arg);
+ adjusted = 0;
+ for (;;)
+ {
+ digits =
+ scale10_round_decimal_long_double (arg,
+ (int)(precision - 1) - exponent);
+ if (digits == NULL)
+ {
+ END_LONG_DOUBLE_ROUNDING ();
+ goto out_of_memory;
+ }
+ ndigits = strlen (digits);
+
+ if (ndigits == precision)
+ break;
+ if (ndigits < precision - 1
+ || ndigits > precision + 1)
+ /* The exponent was not guessed
+ precisely enough. */
+ abort ();
+ if (adjusted)
+ /* None of two values of exponent is
+ the right one. Prevent an endless
+ loop. */
+ abort ();
+ free (digits);
+ if (ndigits < precision)
+ exponent -= 1;
+ else
+ exponent += 1;
+ adjusted = 1;
+ }
+ /* Here ndigits = precision. */
+ if (is_borderline (digits, precision - 1))
+ {
+ /* Maybe the exponent guess was too high
+ and a smaller exponent can be reached
+ by turning a 10...0 into 9...9x. */
+ char *digits2 =
+ scale10_round_decimal_long_double (arg,
+ (int)(precision - 1) - exponent + 1);
+ if (digits2 == NULL)
+ {
+ free (digits);
+ END_LONG_DOUBLE_ROUNDING ();
+ goto out_of_memory;
+ }
+ if (strlen (digits2) == precision)
+ {
+ free (digits);
+ digits = digits2;
+ exponent -= 1;
+ }
+ else
+ free (digits2);
+ }
+ /* Here ndigits = precision. */
+
+ /* Determine the number of trailing zeroes
+ that have to be dropped. */
+ nzeroes = 0;
+ if ((flags & FLAG_ALT) == 0)
+ while (nzeroes < ndigits
+ && digits[nzeroes] == '0')
+ nzeroes++;
+
+ /* The exponent is now determined. */
+ if (exponent >= -4
+ && exponent < (long)precision)
+ {
+ /* Fixed-point notation:
+ max(exponent,0)+1 digits, then the
+ decimal point, then the remaining
+ digits without trailing zeroes. */
+ if (exponent >= 0)
+ {
+ size_t count = exponent + 1;
+ /* Note: count <= precision = ndigits. */
+ for (; count > 0; count--)
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ }
+ else
+ {
+ size_t count = -exponent - 1;
+ *p++ = '0';
+ *p++ = decimal_point_char ();
+ for (; count > 0; count--)
+ *p++ = '0';
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ }
+ else
+ {
+ /* Exponential notation. */
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ *p++ = dp->conversion - 'G' + 'E'; /* 'e' or 'E' */
# if WIDE_CHAR_VERSION
- {
- static const wchar_t decimal_format[] =
- { '%', '+', '.', '2', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
- }
- while (*p != '\0')
- p++;
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', '.', '2', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
# else
- if (sizeof (DCHAR_T) == 1)
- {
- sprintf ((char *) p, "%+.2d", exponent);
- while (*p != '\0')
- p++;
- }
- else
- {
- char expbuf[6 + 1];
- const char *ep;
- sprintf (expbuf, "%+.2d", exponent);
- for (ep = expbuf; (*p = *ep) != '\0'; ep++)
- p++;
- }
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, "%+.2d", exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, "%+.2d", exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
# endif
- }
+ }
- free (digits);
- }
- }
- else
- abort ();
+ free (digits);
+ }
+ }
+ else
+ abort ();
# else
- /* arg is finite. */
- abort ();
+ /* arg is finite. */
+ if (!(arg == 0.0L))
+ abort ();
+
+ pad_ptr = p;
+
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ }
+ else if (dp->conversion == 'e' || dp->conversion == 'E')
+ {
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ *p++ = dp->conversion; /* 'e' or 'E' */
+ *p++ = '+';
+ *p++ = '0';
+ *p++ = '0';
+ }
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
+ {
+ *p++ = '0';
+ if (flags & FLAG_ALT)
+ {
+ size_t ndigits =
+ (precision > 0 ? precision - 1 : 0);
+ *p++ = decimal_point_char ();
+ for (; ndigits > 0; --ndigits)
+ *p++ = '0';
+ }
+ }
+ else if (dp->conversion == 'a' || dp->conversion == 'A')
+ {
+ *p++ = '0';
+ *p++ = dp->conversion - 'A' + 'X';
+ pad_ptr = p;
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ *p++ = dp->conversion - 'A' + 'P';
+ *p++ = '+';
+ *p++ = '0';
+ }
+ else
+ abort ();
# endif
- }
+ }
- END_LONG_DOUBLE_ROUNDING ();
- }
- }
-# if NEED_PRINTF_INFINITE_DOUBLE
- else
+ END_LONG_DOUBLE_ROUNDING ();
+ }
+ }
+# if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+ else
# endif
# endif
-# if NEED_PRINTF_INFINITE_DOUBLE
- {
- /* Simpler than above: handle only NaN, Infinity, zero. */
- double arg = a.arg[dp->arg_index].a.a_double;
-
- if (isnan (arg))
- {
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
- {
- *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
- }
- else
- {
- *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
- }
- }
- else
- {
- int sign = 0;
-
- if (signbit (arg)) /* arg < 0.0L or negative zero */
- {
- sign = -1;
- arg = -arg;
- }
-
- if (sign < 0)
- *p++ = '-';
- else if (flags & FLAG_SHOWSIGN)
- *p++ = '+';
- else if (flags & FLAG_SPACE)
- *p++ = ' ';
-
- if (arg > 0.0 && arg + arg == arg)
- {
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
- {
- *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
- }
- else
- {
- *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
- }
- }
- else
- {
- if (!(arg == 0.0))
- abort ();
-
- pad_ptr = p;
-
- if (dp->conversion == 'f' || dp->conversion == 'F')
- {
- *p++ = '0';
- if ((flags & FLAG_ALT) || precision > 0)
- {
- *p++ = decimal_point_char ();
- for (; precision > 0; precision--)
- *p++ = '0';
- }
- }
- else if (dp->conversion == 'e' || dp->conversion == 'E')
- {
- *p++ = '0';
- if ((flags & FLAG_ALT) || precision > 0)
- {
- *p++ = decimal_point_char ();
- for (; precision > 0; precision--)
- *p++ = '0';
- }
- *p++ = dp->conversion; /* 'e' or 'E' */
- *p++ = '+';
- /* Produce the same number of exponent digits as
- the native printf implementation. */
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
- *p++ = '0';
+# if NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_DOUBLE
+ {
+ double arg = a.arg[dp->arg_index].a.a_double;
+
+ if (isnand (arg))
+ {
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+
+ if (signbit (arg)) /* arg < 0.0 or negative zero */
+ {
+ sign = -1;
+ arg = -arg;
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0 && arg + arg == arg)
+ {
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
+# if NEED_PRINTF_DOUBLE
+ pad_ptr = p;
+
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ char *digits;
+ size_t ndigits;
+
+ digits =
+ scale10_round_decimal_double (arg, precision);
+ if (digits == NULL)
+ goto out_of_memory;
+ ndigits = strlen (digits);
+
+ if (ndigits > precision)
+ do
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ while (ndigits > precision);
+ else
+ *p++ = '0';
+ /* Here ndigits <= precision. */
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > ndigits; precision--)
+ *p++ = '0';
+ while (ndigits > 0)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+
+ free (digits);
+ }
+ else if (dp->conversion == 'e' || dp->conversion == 'E')
+ {
+ int exponent;
+
+ if (arg == 0.0)
+ {
+ exponent = 0;
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ }
+ else
+ {
+ /* arg > 0.0. */
+ int adjusted;
+ char *digits;
+ size_t ndigits;
+
+ exponent = floorlog10 (arg);
+ adjusted = 0;
+ for (;;)
+ {
+ digits =
+ scale10_round_decimal_double (arg,
+ (int)precision - exponent);
+ if (digits == NULL)
+ goto out_of_memory;
+ ndigits = strlen (digits);
+
+ if (ndigits == precision + 1)
+ break;
+ if (ndigits < precision
+ || ndigits > precision + 2)
+ /* The exponent was not guessed
+ precisely enough. */
+ abort ();
+ if (adjusted)
+ /* None of two values of exponent is
+ the right one. Prevent an endless
+ loop. */
+ abort ();
+ free (digits);
+ if (ndigits == precision)
+ exponent -= 1;
+ else
+ exponent += 1;
+ adjusted = 1;
+ }
+ /* Here ndigits = precision+1. */
+ if (is_borderline (digits, precision))
+ {
+ /* Maybe the exponent guess was too high
+ and a smaller exponent can be reached
+ by turning a 10...0 into 9...9x. */
+ char *digits2 =
+ scale10_round_decimal_double (arg,
+ (int)precision - exponent + 1);
+ if (digits2 == NULL)
+ {
+ free (digits);
+ goto out_of_memory;
+ }
+ if (strlen (digits2) == precision + 1)
+ {
+ free (digits);
+ digits = digits2;
+ exponent -= 1;
+ }
+ else
+ free (digits2);
+ }
+ /* Here ndigits = precision+1. */
+
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > 0)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+
+ free (digits);
+ }
+
+ *p++ = dp->conversion; /* 'e' or 'E' */
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ /* Produce the same number of exponent digits
+ as the native printf implementation. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ { '%', '+', '.', '3', 'd', '\0' };
+# else
+ { '%', '+', '.', '2', 'd', '\0' };
+# endif
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
+# else
+ {
+ static const char decimal_format[] =
+ /* Produce the same number of exponent digits
+ as the native printf implementation. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ "%+.3d";
+# else
+ "%+.2d";
+# endif
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, decimal_format, exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, decimal_format, exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
+ }
+# endif
+ }
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
+ {
+ if (precision == 0)
+ precision = 1;
+ /* precision >= 1. */
+
+ if (arg == 0.0)
+ /* The exponent is 0, >= -4, < precision.
+ Use fixed-point notation. */
+ {
+ size_t ndigits = precision;
+ /* Number of trailing zeroes that have to be
+ dropped. */
+ size_t nzeroes =
+ (flags & FLAG_ALT ? 0 : precision - 1);
+
+ --ndigits;
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = '0';
+ }
+ }
+ }
+ else
+ {
+ /* arg > 0.0. */
+ int exponent;
+ int adjusted;
+ char *digits;
+ size_t ndigits;
+ size_t nzeroes;
+
+ exponent = floorlog10 (arg);
+ adjusted = 0;
+ for (;;)
+ {
+ digits =
+ scale10_round_decimal_double (arg,
+ (int)(precision - 1) - exponent);
+ if (digits == NULL)
+ goto out_of_memory;
+ ndigits = strlen (digits);
+
+ if (ndigits == precision)
+ break;
+ if (ndigits < precision - 1
+ || ndigits > precision + 1)
+ /* The exponent was not guessed
+ precisely enough. */
+ abort ();
+ if (adjusted)
+ /* None of two values of exponent is
+ the right one. Prevent an endless
+ loop. */
+ abort ();
+ free (digits);
+ if (ndigits < precision)
+ exponent -= 1;
+ else
+ exponent += 1;
+ adjusted = 1;
+ }
+ /* Here ndigits = precision. */
+ if (is_borderline (digits, precision - 1))
+ {
+ /* Maybe the exponent guess was too high
+ and a smaller exponent can be reached
+ by turning a 10...0 into 9...9x. */
+ char *digits2 =
+ scale10_round_decimal_double (arg,
+ (int)(precision - 1) - exponent + 1);
+ if (digits2 == NULL)
+ {
+ free (digits);
+ goto out_of_memory;
+ }
+ if (strlen (digits2) == precision)
+ {
+ free (digits);
+ digits = digits2;
+ exponent -= 1;
+ }
+ else
+ free (digits2);
+ }
+ /* Here ndigits = precision. */
+
+ /* Determine the number of trailing zeroes
+ that have to be dropped. */
+ nzeroes = 0;
+ if ((flags & FLAG_ALT) == 0)
+ while (nzeroes < ndigits
+ && digits[nzeroes] == '0')
+ nzeroes++;
+
+ /* The exponent is now determined. */
+ if (exponent >= -4
+ && exponent < (long)precision)
+ {
+ /* Fixed-point notation:
+ max(exponent,0)+1 digits, then the
+ decimal point, then the remaining
+ digits without trailing zeroes. */
+ if (exponent >= 0)
+ {
+ size_t count = exponent + 1;
+ /* Note: count <= precision = ndigits. */
+ for (; count > 0; count--)
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ }
+ else
+ {
+ size_t count = -exponent - 1;
+ *p++ = '0';
+ *p++ = decimal_point_char ();
+ for (; count > 0; count--)
+ *p++ = '0';
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ }
+ else
+ {
+ /* Exponential notation. */
+ *p++ = digits[--ndigits];
+ if ((flags & FLAG_ALT) || ndigits > nzeroes)
+ {
+ *p++ = decimal_point_char ();
+ while (ndigits > nzeroes)
+ {
+ --ndigits;
+ *p++ = digits[ndigits];
+ }
+ }
+ *p++ = dp->conversion - 'G' + 'E'; /* 'e' or 'E' */
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ /* Produce the same number of exponent digits
+ as the native printf implementation. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ { '%', '+', '.', '3', 'd', '\0' };
+# else
+ { '%', '+', '.', '2', 'd', '\0' };
+# endif
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+ while (*p != '\0')
+ p++;
+# else
+ {
+ static const char decimal_format[] =
+ /* Produce the same number of exponent digits
+ as the native printf implementation. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ "%+.3d";
+# else
+ "%+.2d";
+# endif
+ if (sizeof (DCHAR_T) == 1)
+ {
+ sprintf ((char *) p, decimal_format, exponent);
+ while (*p != '\0')
+ p++;
+ }
+ else
+ {
+ char expbuf[6 + 1];
+ const char *ep;
+ sprintf (expbuf, decimal_format, exponent);
+ for (ep = expbuf; (*p = *ep) != '\0'; ep++)
+ p++;
+ }
+ }
+# endif
+ }
+
+ free (digits);
+ }
+ }
+ else
+ abort ();
+# else
+ /* arg is finite. */
+ if (!(arg == 0.0))
+ abort ();
+
+ pad_ptr = p;
+
+ if (dp->conversion == 'f' || dp->conversion == 'F')
+ {
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ }
+ else if (dp->conversion == 'e' || dp->conversion == 'E')
+ {
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
+ {
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '0';
+ }
+ *p++ = dp->conversion; /* 'e' or 'E' */
+ *p++ = '+';
+ /* Produce the same number of exponent digits as
+ the native printf implementation. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ *p++ = '0';
+# endif
+ *p++ = '0';
+ *p++ = '0';
+ }
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
+ {
+ *p++ = '0';
+ if (flags & FLAG_ALT)
+ {
+ size_t ndigits =
+ (precision > 0 ? precision - 1 : 0);
+ *p++ = decimal_point_char ();
+ for (; ndigits > 0; --ndigits)
+ *p++ = '0';
+ }
+ }
+ else
+ abort ();
# endif
- *p++ = '0';
- *p++ = '0';
- }
- else if (dp->conversion == 'g' || dp->conversion == 'G')
- {
- *p++ = '0';
- if (flags & FLAG_ALT)
- {
- size_t ndigits =
- (precision > 0 ? precision - 1 : 0);
- *p++ = decimal_point_char ();
- for (; ndigits > 0; --ndigits)
- *p++ = '0';
- }
- }
- else
- abort ();
- }
- }
- }
+ }
+ }
+ }
# endif
- /* The generated string now extends from tmp to p, with the
- zero padding insertion point being at pad_ptr. */
- if (has_width && p - tmp < width)
- {
- size_t pad = width - (p - tmp);
- DCHAR_T *end = p + pad;
-
- if (flags & FLAG_LEFT)
- {
- /* Pad with spaces on the right. */
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
- else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
- {
- /* Pad with zeroes. */
- DCHAR_T *q = end;
-
- while (p > pad_ptr)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = '0';
- }
- else
- {
- /* Pad with spaces on the left. */
- DCHAR_T *q = end;
-
- while (p > tmp)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
-
- p = end;
- }
-
- {
- size_t count = p - tmp;
-
- if (count >= tmp_length)
- /* tmp_length was incorrectly calculated - fix the
- code above! */
- abort ();
-
- /* Make room for the result. */
- if (count >= allocated - length)
- {
- size_t n = xsum (length, count);
-
- ENSURE_ALLOCATION (n);
- }
-
- /* Append the result. */
- memcpy (result + length, tmp, count * sizeof (DCHAR_T));
- if (tmp != tmpbuf)
- free (tmp);
- length += count;
- }
- }
+ /* The generated string now extends from tmp to p, with the
+ zero padding insertion point being at pad_ptr. */
+ if (has_width && p - tmp < width)
+ {
+ size_t pad = width - (p - tmp);
+ DCHAR_T *end = p + pad;
+
+ if (flags & FLAG_LEFT)
+ {
+ /* Pad with spaces on the right. */
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+ else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+ {
+ /* Pad with zeroes. */
+ DCHAR_T *q = end;
+
+ while (p > pad_ptr)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = '0';
+ }
+ else
+ {
+ /* Pad with spaces on the left. */
+ DCHAR_T *q = end;
+
+ while (p > tmp)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+
+ p = end;
+ }
+
+ {
+ size_t count = p - tmp;
+
+ if (count >= tmp_length)
+ /* tmp_length was incorrectly calculated - fix the
+ code above! */
+ abort ();
+
+ /* Make room for the result. */
+ if (count >= allocated - length)
+ {
+ size_t n = xsum (length, count);
+
+ ENSURE_ALLOCATION (n);
+ }
+
+ /* Append the result. */
+ memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+ if (tmp != tmpbuf)
+ free (tmp);
+ length += count;
+ }
+ }
#endif
- else
- {
- arg_type type = a.arg[dp->arg_index].type;
- int flags = dp->flags;
-#if !USE_SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO
- int has_width;
- size_t width;
+ else
+ {
+ arg_type type = a.arg[dp->arg_index].type;
+ int flags = dp->flags;
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+ int has_width;
+ size_t width;
#endif
-#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO
- int pad_ourselves;
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
+ int has_precision;
+ size_t precision;
+#endif
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+ int prec_ourselves;
+#else
+# define prec_ourselves 0
+#endif
+#if NEED_PRINTF_FLAG_LEFTADJUST
+# define pad_ourselves 1
+#elif !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+ int pad_ourselves;
#else
-# define pad_ourselves 0
+# define pad_ourselves 0
#endif
- TCHAR_T *fbp;
- unsigned int prefix_count;
- int prefixes[2];
+ TCHAR_T *fbp;
+ unsigned int prefix_count;
+ int prefixes[2] IF_LINT (= { 0 });
+ int orig_errno;
#if !USE_SNPRINTF
- size_t tmp_length;
- TCHAR_T tmpbuf[700];
- TCHAR_T *tmp;
+ size_t tmp_length;
+ TCHAR_T tmpbuf[700];
+ TCHAR_T *tmp;
#endif
-#if !USE_SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO
- has_width = 0;
- width = 0;
- if (dp->width_start != dp->width_end)
- {
- if (dp->width_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->width_arg_index].a.a_int;
- if (arg < 0)
- {
- /* "A negative field width is taken as a '-' flag
- followed by a positive field width." */
- flags |= FLAG_LEFT;
- width = (unsigned int) (-arg);
- }
- else
- width = arg;
- }
- else
- {
- const FCHAR_T *digitp = dp->width_start;
-
- do
- width = xsum (xtimes (width, 10), *digitp++ - '0');
- while (digitp != dp->width_end);
- }
- has_width = 1;
- }
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
#endif
-#if !USE_SNPRINTF
- /* Allocate a temporary buffer of sufficient size for calling
- sprintf. */
- {
- size_t precision;
-
- precision = 6;
- if (dp->precision_start != dp->precision_end)
- {
- if (dp->precision_arg_index != ARG_NONE)
- {
- int arg;
-
- if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
- abort ();
- arg = a.arg[dp->precision_arg_index].a.a_int;
- precision = (arg < 0 ? 0 : arg);
- }
- else
- {
- const FCHAR_T *digitp = dp->precision_start + 1;
-
- precision = 0;
- while (digitp != dp->precision_end)
- precision = xsum (xtimes (precision, 10), *digitp++ - '0');
- }
- }
-
- switch (dp->conversion)
- {
-
- case 'd': case 'i': case 'u':
-# if HAVE_LONG_LONG_INT
- if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
- * 0.30103 /* binary -> decimal */
- )
- + 1; /* turn floor into ceil */
- else
-# endif
- if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long) * CHAR_BIT
- * 0.30103 /* binary -> decimal */
- )
- + 1; /* turn floor into ceil */
- else
- tmp_length =
- (unsigned int) (sizeof (unsigned int) * CHAR_BIT
- * 0.30103 /* binary -> decimal */
- )
- + 1; /* turn floor into ceil */
- if (tmp_length < precision)
- tmp_length = precision;
- /* Multiply by 2, as an estimate for FLAG_GROUP. */
- tmp_length = xsum (tmp_length, tmp_length);
- /* Add 1, to account for a leading sign. */
- tmp_length = xsum (tmp_length, 1);
- break;
-
- case 'o':
-# if HAVE_LONG_LONG_INT
- if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
- * 0.333334 /* binary -> octal */
- )
- + 1; /* turn floor into ceil */
- else
-# endif
- if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long) * CHAR_BIT
- * 0.333334 /* binary -> octal */
- )
- + 1; /* turn floor into ceil */
- else
- tmp_length =
- (unsigned int) (sizeof (unsigned int) * CHAR_BIT
- * 0.333334 /* binary -> octal */
- )
- + 1; /* turn floor into ceil */
- if (tmp_length < precision)
- tmp_length = precision;
- /* Add 1, to account for a leading sign. */
- tmp_length = xsum (tmp_length, 1);
- break;
-
- case 'x': case 'X':
-# if HAVE_LONG_LONG_INT
- if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
- * 0.25 /* binary -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- else
-# endif
- if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
- tmp_length =
- (unsigned int) (sizeof (unsigned long) * CHAR_BIT
- * 0.25 /* binary -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- else
- tmp_length =
- (unsigned int) (sizeof (unsigned int) * CHAR_BIT
- * 0.25 /* binary -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- if (tmp_length < precision)
- tmp_length = precision;
- /* Add 2, to account for a leading sign or alternate form. */
- tmp_length = xsum (tmp_length, 2);
- break;
-
- case 'f': case 'F':
- if (type == TYPE_LONGDOUBLE)
- tmp_length =
- (unsigned int) (LDBL_MAX_EXP
- * 0.30103 /* binary -> decimal */
- * 2 /* estimate for FLAG_GROUP */
- )
- + 1 /* turn floor into ceil */
- + 10; /* sign, decimal point etc. */
- else
- tmp_length =
- (unsigned int) (DBL_MAX_EXP
- * 0.30103 /* binary -> decimal */
- * 2 /* estimate for FLAG_GROUP */
- )
- + 1 /* turn floor into ceil */
- + 10; /* sign, decimal point etc. */
- tmp_length = xsum (tmp_length, precision);
- break;
-
- case 'e': case 'E': case 'g': case 'G':
- tmp_length =
- 12; /* sign, decimal point, exponent etc. */
- tmp_length = xsum (tmp_length, precision);
- break;
-
- case 'a': case 'A':
- if (type == TYPE_LONGDOUBLE)
- tmp_length =
- (unsigned int) (LDBL_DIG
- * 0.831 /* decimal -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- else
- tmp_length =
- (unsigned int) (DBL_DIG
- * 0.831 /* decimal -> hexadecimal */
- )
- + 1; /* turn floor into ceil */
- if (tmp_length < precision)
- tmp_length = precision;
- /* Account for sign, decimal point etc. */
- tmp_length = xsum (tmp_length, 12);
- break;
-
- case 'c':
-# if HAVE_WINT_T && !WIDE_CHAR_VERSION
- if (type == TYPE_WIDE_CHAR)
- tmp_length = MB_CUR_MAX;
- else
-# endif
- tmp_length = 1;
- break;
-
- case 's':
-# if HAVE_WCHAR_T
- if (type == TYPE_WIDE_STRING)
- {
- tmp_length =
- local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
-
-# if !WIDE_CHAR_VERSION
- tmp_length = xtimes (tmp_length, MB_CUR_MAX);
-# endif
- }
- else
-# endif
- tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
- break;
-
- case 'p':
- tmp_length =
- (unsigned int) (sizeof (void *) * CHAR_BIT
- * 0.25 /* binary -> hexadecimal */
- )
- + 1 /* turn floor into ceil */
- + 2; /* account for leading 0x */
- break;
-
- default:
- abort ();
- }
-
-# if ENABLE_UNISTDIO
- /* Padding considers the number of characters, therefore the
- number of elements after padding may be
- > max (tmp_length, width)
- but is certainly
- <= tmp_length + width. */
- tmp_length = xsum (tmp_length, width);
-# else
- /* Padding considers the number of elements, says POSIX. */
- if (tmp_length < width)
- tmp_length = width;
-# endif
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
+ has_precision = 0;
+ precision = 6;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const FCHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+#endif
- tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
- }
-
- if (tmp_length <= sizeof (tmpbuf) / sizeof (TCHAR_T))
- tmp = tmpbuf;
- else
- {
- size_t tmp_memsize = xtimes (tmp_length, sizeof (TCHAR_T));
-
- if (size_overflow_p (tmp_memsize))
- /* Overflow, would lead to out of memory. */
- goto out_of_memory;
- tmp = (TCHAR_T *) malloc (tmp_memsize);
- if (tmp == NULL)
- /* Out of memory. */
- goto out_of_memory;
- }
+ /* Decide whether to handle the precision ourselves. */
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+ switch (dp->conversion)
+ {
+ case 'd': case 'i': case 'u':
+ case 'o':
+ case 'x': case 'X': case 'p':
+ prec_ourselves = has_precision && (precision > 0);
+ break;
+ default:
+ prec_ourselves = 0;
+ break;
+ }
#endif
- /* Decide whether to perform the padding ourselves. */
-#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO
- switch (dp->conversion)
- {
+ /* Decide whether to perform the padding ourselves. */
+#if !NEED_PRINTF_FLAG_LEFTADJUST && (!DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION)
+ switch (dp->conversion)
+ {
# if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO
- /* If we need conversion from TCHAR_T[] to DCHAR_T[], we need
- to perform the padding after this conversion. Functions
- with unistdio extensions perform the padding based on
- character count rather than element count. */
- case 'c': case 's':
+ /* If we need conversion from TCHAR_T[] to DCHAR_T[], we need
+ to perform the padding after this conversion. Functions
+ with unistdio extensions perform the padding based on
+ character count rather than element count. */
+ case 'c': case 's':
# endif
# if NEED_PRINTF_FLAG_ZERO
- case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
- case 'a': case 'A':
+ case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
+ case 'a': case 'A':
# endif
- pad_ourselves = 1;
- break;
- default:
- pad_ourselves = 0;
- break;
- }
+ pad_ourselves = 1;
+ break;
+ default:
+ pad_ourselves = prec_ourselves;
+ break;
+ }
#endif
- /* Construct the format string for calling snprintf or
- sprintf. */
- fbp = buf;
- *fbp++ = '%';
+#if !USE_SNPRINTF
+ /* Allocate a temporary buffer of sufficient size for calling
+ sprintf. */
+ tmp_length =
+ MAX_ROOM_NEEDED (&a, dp->arg_index, dp->conversion, type,
+ flags, width, has_precision, precision,
+ pad_ourselves);
+
+ if (tmp_length <= sizeof (tmpbuf) / sizeof (TCHAR_T))
+ tmp = tmpbuf;
+ else
+ {
+ size_t tmp_memsize = xtimes (tmp_length, sizeof (TCHAR_T));
+
+ if (size_overflow_p (tmp_memsize))
+ /* Overflow, would lead to out of memory. */
+ goto out_of_memory;
+ tmp = (TCHAR_T *) malloc (tmp_memsize);
+ if (tmp == NULL)
+ /* Out of memory. */
+ goto out_of_memory;
+ }
+#endif
+
+ /* Construct the format string for calling snprintf or
+ sprintf. */
+ fbp = buf;
+ *fbp++ = '%';
#if NEED_PRINTF_FLAG_GROUPING
- /* The underlying implementation doesn't support the ' flag.
- Produce no grouping characters in this case; this is
- acceptable because the grouping is locale dependent. */
+ /* The underlying implementation doesn't support the ' flag.
+ Produce no grouping characters in this case; this is
+ acceptable because the grouping is locale dependent. */
#else
- if (flags & FLAG_GROUP)
- *fbp++ = '\'';
+ if (flags & FLAG_GROUP)
+ *fbp++ = '\'';
+#endif
+ if (flags & FLAG_LEFT)
+ *fbp++ = '-';
+ if (flags & FLAG_SHOWSIGN)
+ *fbp++ = '+';
+ if (flags & FLAG_SPACE)
+ *fbp++ = ' ';
+ if (flags & FLAG_ALT)
+ *fbp++ = '#';
+#if __GLIBC__ >= 2 && !defined __UCLIBC__
+ if (flags & FLAG_LOCALIZED)
+ *fbp++ = 'I';
#endif
- if (flags & FLAG_LEFT)
- *fbp++ = '-';
- if (flags & FLAG_SHOWSIGN)
- *fbp++ = '+';
- if (flags & FLAG_SPACE)
- *fbp++ = ' ';
- if (flags & FLAG_ALT)
- *fbp++ = '#';
- if (!pad_ourselves)
- {
- if (flags & FLAG_ZERO)
- *fbp++ = '0';
- if (dp->width_start != dp->width_end)
- {
- size_t n = dp->width_end - dp->width_start;
- /* The width specification is known to consist only
- of standard ASCII characters. */
- if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
- {
- memcpy (fbp, dp->width_start, n * sizeof (TCHAR_T));
- fbp += n;
- }
- else
- {
- const FCHAR_T *mp = dp->width_start;
- do
- *fbp++ = (unsigned char) *mp++;
- while (--n > 0);
- }
- }
- }
- if (dp->precision_start != dp->precision_end)
- {
- size_t n = dp->precision_end - dp->precision_start;
- /* The precision specification is known to consist only
- of standard ASCII characters. */
- if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
- {
- memcpy (fbp, dp->precision_start, n * sizeof (TCHAR_T));
- fbp += n;
- }
- else
- {
- const FCHAR_T *mp = dp->precision_start;
- do
- *fbp++ = (unsigned char) *mp++;
- while (--n > 0);
- }
- }
-
- switch (type)
- {
+ if (!pad_ourselves)
+ {
+ if (flags & FLAG_ZERO)
+ *fbp++ = '0';
+ if (dp->width_start != dp->width_end)
+ {
+ size_t n = dp->width_end - dp->width_start;
+ /* The width specification is known to consist only
+ of standard ASCII characters. */
+ if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
+ {
+ memcpy (fbp, dp->width_start, n * sizeof (TCHAR_T));
+ fbp += n;
+ }
+ else
+ {
+ const FCHAR_T *mp = dp->width_start;
+ do
+ *fbp++ = (unsigned char) *mp++;
+ while (--n > 0);
+ }
+ }
+ }
+ if (!prec_ourselves)
+ {
+ if (dp->precision_start != dp->precision_end)
+ {
+ size_t n = dp->precision_end - dp->precision_start;
+ /* The precision specification is known to consist only
+ of standard ASCII characters. */
+ if (sizeof (FCHAR_T) == sizeof (TCHAR_T))
+ {
+ memcpy (fbp, dp->precision_start, n * sizeof (TCHAR_T));
+ fbp += n;
+ }
+ else
+ {
+ const FCHAR_T *mp = dp->precision_start;
+ do
+ *fbp++ = (unsigned char) *mp++;
+ while (--n > 0);
+ }
+ }
+ }
+
+ switch (type)
+ {
#if HAVE_LONG_LONG_INT
- case TYPE_LONGLONGINT:
- case TYPE_ULONGLONGINT:
+ case TYPE_LONGLONGINT:
+ case TYPE_ULONGLONGINT:
# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
- *fbp++ = 'I';
- *fbp++ = '6';
- *fbp++ = '4';
- break;
+ *fbp++ = 'I';
+ *fbp++ = '6';
+ *fbp++ = '4';
+ break;
# else
- *fbp++ = 'l';
- /*FALLTHROUGH*/
+ *fbp++ = 'l';
+ /*FALLTHROUGH*/
# endif
#endif
- case TYPE_LONGINT:
- case TYPE_ULONGINT:
+ case TYPE_LONGINT:
+ case TYPE_ULONGINT:
#if HAVE_WINT_T
- case TYPE_WIDE_CHAR:
+ case TYPE_WIDE_CHAR:
#endif
#if HAVE_WCHAR_T
- case TYPE_WIDE_STRING:
+ case TYPE_WIDE_STRING:
#endif
- *fbp++ = 'l';
- break;
- case TYPE_LONGDOUBLE:
- *fbp++ = 'L';
- break;
- default:
- break;
- }
+ *fbp++ = 'l';
+ break;
+ case TYPE_LONGDOUBLE:
+ *fbp++ = 'L';
+ break;
+ default:
+ break;
+ }
#if NEED_PRINTF_DIRECTIVE_F
- if (dp->conversion == 'F')
- *fbp = 'f';
- else
+ if (dp->conversion == 'F')
+ *fbp = 'f';
+ else
#endif
- *fbp = dp->conversion;
+ *fbp = dp->conversion;
#if USE_SNPRINTF
- fbp[1] = '%';
- fbp[2] = 'n';
- fbp[3] = '\0';
+# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+ fbp[1] = '%';
+ fbp[2] = 'n';
+ fbp[3] = '\0';
+# else
+ /* On glibc2 systems from glibc >= 2.3 - probably also older
+ ones - we know that snprintf's return value conforms to
+ ISO C 99: the tests gl_SNPRINTF_RETVAL_C99 and
+ gl_SNPRINTF_TRUNCATION_C99 pass.
+ Therefore we can avoid using %n in this situation.
+ On glibc2 systems from 2004-10-18 or newer, the use of %n
+ in format strings in writable memory may crash the program
+ (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
+ in this situation. */
+ /* On native Windows systems (such as mingw), we can avoid using
+ %n because:
+ - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
+ snprintf does not write more than the specified number
+ of bytes. (snprintf (buf, 3, "%d %d", 4567, 89) writes
+ '4', '5', '6' into buf, not '4', '5', '\0'.)
+ - Although the gl_SNPRINTF_RETVAL_C99 test fails, snprintf
+ allows us to recognize the case of an insufficient
+ buffer size: it returns -1 in this case.
+ On native Windows systems (such as mingw) where the OS is
+ Windows Vista, the use of %n in format strings by default
+ crashes the program. See
+ <http://gcc.gnu.org/ml/gcc/2007-06/msg00122.html> and
+ <http://msdn2.microsoft.com/en-us/library/ms175782(VS.80).aspx>
+ So we should avoid %n in this situation. */
+ fbp[1] = '\0';
+# endif
#else
- fbp[1] = '\0';
+ fbp[1] = '\0';
#endif
- /* Construct the arguments for calling snprintf or sprintf. */
- prefix_count = 0;
- if (!pad_ourselves && dp->width_arg_index != ARG_NONE)
- {
- if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
- abort ();
- prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
- }
- if (dp->precision_arg_index != ARG_NONE)
- {
- if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
- abort ();
- prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
- }
+ /* Construct the arguments for calling snprintf or sprintf. */
+ prefix_count = 0;
+ if (!pad_ourselves && dp->width_arg_index != ARG_NONE)
+ {
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
+ }
+ if (!prec_ourselves && dp->precision_arg_index != ARG_NONE)
+ {
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
+ }
#if USE_SNPRINTF
- /* The SNPRINTF result is appended after result[0..length].
- The latter is an array of DCHAR_T; SNPRINTF appends an
- array of TCHAR_T to it. This is possible because
- sizeof (TCHAR_T) divides sizeof (DCHAR_T) and
- alignof (TCHAR_T) <= alignof (DCHAR_T). */
+ /* The SNPRINTF result is appended after result[0..length].
+ The latter is an array of DCHAR_T; SNPRINTF appends an
+ array of TCHAR_T to it. This is possible because
+ sizeof (TCHAR_T) divides sizeof (DCHAR_T) and
+ alignof (TCHAR_T) <= alignof (DCHAR_T). */
# define TCHARS_PER_DCHAR (sizeof (DCHAR_T) / sizeof (TCHAR_T))
- /* Prepare checking whether snprintf returns the count
- via %n. */
- ENSURE_ALLOCATION (xsum (length, 1));
- *(TCHAR_T *) (result + length) = '\0';
+ /* Ensure that maxlen below will be >= 2. Needed on BeOS,
+ where an snprintf() with maxlen==1 acts like sprintf(). */
+ ENSURE_ALLOCATION (xsum (length,
+ (2 + TCHARS_PER_DCHAR - 1)
+ / TCHARS_PER_DCHAR));
+ /* Prepare checking whether snprintf returns the count
+ via %n. */
+ *(TCHAR_T *) (result + length) = '\0';
#endif
- for (;;)
- {
- int count = -1;
+ orig_errno = errno;
+
+ for (;;)
+ {
+ int count = -1;
#if USE_SNPRINTF
- int retcount = 0;
- size_t maxlen = allocated - length;
- /* SNPRINTF can fail if its second argument is
- > INT_MAX. */
- if (maxlen > INT_MAX / TCHARS_PER_DCHAR)
- goto overflow;
- maxlen = maxlen * TCHARS_PER_DCHAR;
+ int retcount = 0;
+ size_t maxlen = allocated - length;
+ /* SNPRINTF can fail if its second argument is
+ > INT_MAX. */
+ if (maxlen > INT_MAX / TCHARS_PER_DCHAR)
+ maxlen = INT_MAX / TCHARS_PER_DCHAR;
+ maxlen = maxlen * TCHARS_PER_DCHAR;
# define SNPRINTF_BUF(arg) \
- switch (prefix_count) \
- { \
- case 0: \
- retcount = SNPRINTF ((TCHAR_T *) (result + length), \
- maxlen, buf, \
- arg, &count); \
- break; \
- case 1: \
- retcount = SNPRINTF ((TCHAR_T *) (result + length), \
- maxlen, buf, \
- prefixes[0], arg, &count); \
- break; \
- case 2: \
- retcount = SNPRINTF ((TCHAR_T *) (result + length), \
- maxlen, buf, \
- prefixes[0], prefixes[1], arg, \
- &count); \
- break; \
- default: \
- abort (); \
- }
+ switch (prefix_count) \
+ { \
+ case 0: \
+ retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+ maxlen, buf, \
+ arg, &count); \
+ break; \
+ case 1: \
+ retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+ maxlen, buf, \
+ prefixes[0], arg, &count); \
+ break; \
+ case 2: \
+ retcount = SNPRINTF ((TCHAR_T *) (result + length), \
+ maxlen, buf, \
+ prefixes[0], prefixes[1], arg, \
+ &count); \
+ break; \
+ default: \
+ abort (); \
+ }
#else
# define SNPRINTF_BUF(arg) \
- switch (prefix_count) \
- { \
- case 0: \
- count = sprintf (tmp, buf, arg); \
- break; \
- case 1: \
- count = sprintf (tmp, buf, prefixes[0], arg); \
- break; \
- case 2: \
- count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
- arg); \
- break; \
- default: \
- abort (); \
- }
+ switch (prefix_count) \
+ { \
+ case 0: \
+ count = sprintf (tmp, buf, arg); \
+ break; \
+ case 1: \
+ count = sprintf (tmp, buf, prefixes[0], arg); \
+ break; \
+ case 2: \
+ count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
+ arg); \
+ break; \
+ default: \
+ abort (); \
+ }
#endif
- switch (type)
- {
- case TYPE_SCHAR:
- {
- int arg = a.arg[dp->arg_index].a.a_schar;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_UCHAR:
- {
- unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_SHORT:
- {
- int arg = a.arg[dp->arg_index].a.a_short;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_USHORT:
- {
- unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_INT:
- {
- int arg = a.arg[dp->arg_index].a.a_int;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_UINT:
- {
- unsigned int arg = a.arg[dp->arg_index].a.a_uint;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_LONGINT:
- {
- long int arg = a.arg[dp->arg_index].a.a_longint;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_ULONGINT:
- {
- unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
- SNPRINTF_BUF (arg);
- }
- break;
+ errno = 0;
+ switch (type)
+ {
+ case TYPE_SCHAR:
+ {
+ int arg = a.arg[dp->arg_index].a.a_schar;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_UCHAR:
+ {
+ unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_SHORT:
+ {
+ int arg = a.arg[dp->arg_index].a.a_short;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_USHORT:
+ {
+ unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_INT:
+ {
+ int arg = a.arg[dp->arg_index].a.a_int;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_UINT:
+ {
+ unsigned int arg = a.arg[dp->arg_index].a.a_uint;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_LONGINT:
+ {
+ long int arg = a.arg[dp->arg_index].a.a_longint;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_ULONGINT:
+ {
+ unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#if HAVE_LONG_LONG_INT
- case TYPE_LONGLONGINT:
- {
- long long int arg = a.arg[dp->arg_index].a.a_longlongint;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_ULONGLONGINT:
- {
- unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
- SNPRINTF_BUF (arg);
- }
- break;
+ case TYPE_LONGLONGINT:
+ {
+ long long int arg = a.arg[dp->arg_index].a.a_longlongint;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_ULONGLONGINT:
+ {
+ unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#endif
- case TYPE_DOUBLE:
- {
- double arg = a.arg[dp->arg_index].a.a_double;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_LONGDOUBLE:
- {
- long double arg = a.arg[dp->arg_index].a.a_longdouble;
- SNPRINTF_BUF (arg);
- }
- break;
- case TYPE_CHAR:
- {
- int arg = a.arg[dp->arg_index].a.a_char;
- SNPRINTF_BUF (arg);
- }
- break;
+ case TYPE_DOUBLE:
+ {
+ double arg = a.arg[dp->arg_index].a.a_double;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_LONGDOUBLE:
+ {
+ long double arg = a.arg[dp->arg_index].a.a_longdouble;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ case TYPE_CHAR:
+ {
+ int arg = a.arg[dp->arg_index].a.a_char;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#if HAVE_WINT_T
- case TYPE_WIDE_CHAR:
- {
- wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
- SNPRINTF_BUF (arg);
- }
- break;
+ case TYPE_WIDE_CHAR:
+ {
+ wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#endif
- case TYPE_STRING:
- {
- const char *arg = a.arg[dp->arg_index].a.a_string;
- SNPRINTF_BUF (arg);
- }
- break;
+ case TYPE_STRING:
+ {
+ const char *arg = a.arg[dp->arg_index].a.a_string;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#if HAVE_WCHAR_T
- case TYPE_WIDE_STRING:
- {
- const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
- SNPRINTF_BUF (arg);
- }
- break;
+ case TYPE_WIDE_STRING:
+ {
+ const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+ SNPRINTF_BUF (arg);
+ }
+ break;
#endif
- case TYPE_POINTER:
- {
- void *arg = a.arg[dp->arg_index].a.a_pointer;
- SNPRINTF_BUF (arg);
- }
- break;
- default:
- abort ();
- }
+ case TYPE_POINTER:
+ {
+ void *arg = a.arg[dp->arg_index].a.a_pointer;
+ SNPRINTF_BUF (arg);
+ }
+ break;
+ default:
+ abort ();
+ }
#if USE_SNPRINTF
- /* Portability: Not all implementations of snprintf()
- are ISO C 99 compliant. Determine the number of
- bytes that snprintf() has produced or would have
- produced. */
- if (count >= 0)
- {
- /* Verify that snprintf() has NUL-terminated its
- result. */
- if (count < maxlen
- && ((TCHAR_T *) (result + length)) [count] != '\0')
- abort ();
- /* Portability hack. */
- if (retcount > count)
- count = retcount;
- }
- else
- {
- /* snprintf() doesn't understand the '%n'
- directive. */
- if (fbp[1] != '\0')
- {
- /* Don't use the '%n' directive; instead, look
- at the snprintf() return value. */
- fbp[1] = '\0';
- continue;
- }
- else
- {
- /* Look at the snprintf() return value. */
- if (retcount < 0)
- {
- /* HP-UX 10.20 snprintf() is doubly deficient:
- It doesn't understand the '%n' directive,
- *and* it returns -1 (rather than the length
- that would have been required) when the
- buffer is too small. */
- size_t bigger_need =
- xsum (xtimes (allocated, 2), 12);
- ENSURE_ALLOCATION (bigger_need);
- continue;
- }
- else
- count = retcount;
- }
- }
+ /* Portability: Not all implementations of snprintf()
+ are ISO C 99 compliant. Determine the number of
+ bytes that snprintf() has produced or would have
+ produced. */
+ if (count >= 0)
+ {
+ /* Verify that snprintf() has NUL-terminated its
+ result. */
+ if (count < maxlen
+ && ((TCHAR_T *) (result + length)) [count] != '\0')
+ abort ();
+ /* Portability hack. */
+ if (retcount > count)
+ count = retcount;
+ }
+ else
+ {
+ /* snprintf() doesn't understand the '%n'
+ directive. */
+ if (fbp[1] != '\0')
+ {
+ /* Don't use the '%n' directive; instead, look
+ at the snprintf() return value. */
+ fbp[1] = '\0';
+ continue;
+ }
+ else
+ {
+ /* Look at the snprintf() return value. */
+ if (retcount < 0)
+ {
+# if !HAVE_SNPRINTF_RETVAL_C99
+ /* HP-UX 10.20 snprintf() is doubly deficient:
+ It doesn't understand the '%n' directive,
+ *and* it returns -1 (rather than the length
+ that would have been required) when the
+ buffer is too small.
+ But a failure at this point can also come
+ from other reasons than a too small buffer,
+ such as an invalid wide string argument to
+ the %ls directive, or possibly an invalid
+ floating-point argument. */
+ size_t tmp_length =
+ MAX_ROOM_NEEDED (&a, dp->arg_index,
+ dp->conversion, type, flags,
+ has_width ? width : 0,
+ has_precision,
+ precision, pad_ourselves);
+
+ if (maxlen < tmp_length)
+ {
+ /* Make more room. But try to do through
+ this reallocation only once. */
+ size_t bigger_need =
+ xsum (length,
+ xsum (tmp_length,
+ TCHARS_PER_DCHAR - 1)
+ / TCHARS_PER_DCHAR);
+ /* And always grow proportionally.
+ (There may be several arguments, each
+ needing a little more room than the
+ previous one.) */
+ size_t bigger_need2 =
+ xsum (xtimes (allocated, 2), 12);
+ if (bigger_need < bigger_need2)
+ bigger_need = bigger_need2;
+ ENSURE_ALLOCATION (bigger_need);
+ continue;
+ }
+# endif
+ }
+ else
+ count = retcount;
+ }
+ }
#endif
- /* Attempt to handle failure. */
- if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EINVAL;
- return NULL;
- }
+ /* Attempt to handle failure. */
+ if (count < 0)
+ {
+ /* SNPRINTF or sprintf failed. Save and use the errno
+ that it has set, if any. */
+ int saved_errno = errno;
+
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno =
+ (saved_errno != 0
+ ? saved_errno
+ : (dp->conversion == 'c' || dp->conversion == 's'
+ ? EILSEQ
+ : EINVAL));
+ return NULL;
+ }
#if USE_SNPRINTF
- /* Handle overflow of the allocated buffer. */
- if (count >= maxlen)
- {
- /* Need at least count * sizeof (TCHAR_T) bytes. But
- allocate proportionally, to avoid looping eternally
- if snprintf() reports a too small count. */
- size_t n =
- xmax (xsum (length,
- (count + TCHARS_PER_DCHAR - 1)
- / TCHARS_PER_DCHAR),
- xtimes (allocated, 2));
-
- ENSURE_ALLOCATION (n);
- continue;
- }
+ /* Handle overflow of the allocated buffer.
+ If such an overflow occurs, a C99 compliant snprintf()
+ returns a count >= maxlen. However, a non-compliant
+ snprintf() function returns only count = maxlen - 1. To
+ cover both cases, test whether count >= maxlen - 1. */
+ if ((unsigned int) count + 1 >= maxlen)
+ {
+ /* If maxlen already has attained its allowed maximum,
+ allocating more memory will not increase maxlen.
+ Instead of looping, bail out. */
+ if (maxlen == INT_MAX / TCHARS_PER_DCHAR)
+ goto overflow;
+ else
+ {
+ /* Need at least (count + 1) * sizeof (TCHAR_T)
+ bytes. (The +1 is for the trailing NUL.)
+ But ask for (count + 2) * sizeof (TCHAR_T)
+ bytes, so that in the next round, we likely get
+ maxlen > (unsigned int) count + 1
+ and so we don't get here again.
+ And allocate proportionally, to avoid looping
+ eternally if snprintf() reports a too small
+ count. */
+ size_t n =
+ xmax (xsum (length,
+ ((unsigned int) count + 2
+ + TCHARS_PER_DCHAR - 1)
+ / TCHARS_PER_DCHAR),
+ xtimes (allocated, 2));
+
+ ENSURE_ALLOCATION (n);
+ continue;
+ }
+ }
#endif
-#if !DCHAR_IS_TCHAR
-# if !USE_SNPRINTF
- if (count >= tmp_length)
- /* tmp_length was incorrectly calculated - fix the
- code above! */
- abort ();
+#if NEED_PRINTF_UNBOUNDED_PRECISION
+ if (prec_ourselves)
+ {
+ /* Handle the precision. */
+ TCHAR_T *prec_ptr =
+# if USE_SNPRINTF
+ (TCHAR_T *) (result + length);
+# else
+ tmp;
# endif
+ size_t prefix_count;
+ size_t move;
+
+ prefix_count = 0;
+ /* Put the additional zeroes after the sign. */
+ if (count >= 1
+ && (*prec_ptr == '-' || *prec_ptr == '+'
+ || *prec_ptr == ' '))
+ prefix_count = 1;
+ /* Put the additional zeroes after the 0x prefix if
+ (flags & FLAG_ALT) || (dp->conversion == 'p'). */
+ else if (count >= 2
+ && prec_ptr[0] == '0'
+ && (prec_ptr[1] == 'x' || prec_ptr[1] == 'X'))
+ prefix_count = 2;
+
+ move = count - prefix_count;
+ if (precision > move)
+ {
+ /* Insert zeroes. */
+ size_t insert = precision - move;
+ TCHAR_T *prec_end;
- /* Convert from TCHAR_T[] to DCHAR_T[]. */
- if (dp->conversion == 'c' || dp->conversion == 's')
- {
- /* type = TYPE_CHAR or TYPE_WIDE_CHAR or TYPE_STRING
- TYPE_WIDE_STRING.
- The result string is not certainly ASCII. */
- const TCHAR_T *tmpsrc;
- DCHAR_T *tmpdst;
- size_t tmpdst_len;
- /* This code assumes that TCHAR_T is 'char'. */
- typedef int TCHAR_T_verify
- [2 * (sizeof (TCHAR_T) == 1) - 1];
# if USE_SNPRINTF
- tmpsrc = (TCHAR_T *) (result + length);
+ size_t n =
+ xsum (length,
+ (count + insert + TCHARS_PER_DCHAR - 1)
+ / TCHARS_PER_DCHAR);
+ length += (count + TCHARS_PER_DCHAR - 1) / TCHARS_PER_DCHAR;
+ ENSURE_ALLOCATION (n);
+ length -= (count + TCHARS_PER_DCHAR - 1) / TCHARS_PER_DCHAR;
+ prec_ptr = (TCHAR_T *) (result + length);
+# endif
+
+ prec_end = prec_ptr + count;
+ prec_ptr += prefix_count;
+
+ while (prec_end > prec_ptr)
+ {
+ prec_end--;
+ prec_end[insert] = prec_end[0];
+ }
+
+ prec_end += insert;
+ do
+ *--prec_end = '0';
+ while (prec_end > prec_ptr);
+
+ count += insert;
+ }
+ }
+#endif
+
+#if !USE_SNPRINTF
+ if (count >= tmp_length)
+ /* tmp_length was incorrectly calculated - fix the
+ code above! */
+ abort ();
+#endif
+
+#if !DCHAR_IS_TCHAR
+ /* Convert from TCHAR_T[] to DCHAR_T[]. */
+ if (dp->conversion == 'c' || dp->conversion == 's')
+ {
+ /* type = TYPE_CHAR or TYPE_WIDE_CHAR or TYPE_STRING
+ TYPE_WIDE_STRING.
+ The result string is not certainly ASCII. */
+ const TCHAR_T *tmpsrc;
+ DCHAR_T *tmpdst;
+ size_t tmpdst_len;
+ /* This code assumes that TCHAR_T is 'char'. */
+ verify (sizeof (TCHAR_T) == 1);
+# if USE_SNPRINTF
+ tmpsrc = (TCHAR_T *) (result + length);
# else
- tmpsrc = tmp;
+ tmpsrc = tmp;
# endif
- tmpdst = NULL;
- tmpdst_len = 0;
- if (DCHAR_CONV_FROM_ENCODING (locale_charset (),
- iconveh_question_mark,
- tmpsrc, count,
- NULL,
- &tmpdst, &tmpdst_len)
- < 0)
- {
- int saved_errno = errno;
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = saved_errno;
- return NULL;
- }
- ENSURE_ALLOCATION (xsum (length, tmpdst_len));
- DCHAR_CPY (result + length, tmpdst, tmpdst_len);
- free (tmpdst);
- count = tmpdst_len;
- }
- else
- {
- /* The result string is ASCII.
- Simple 1:1 conversion. */
+ tmpdst =
+ DCHAR_CONV_FROM_ENCODING (locale_charset (),
+ iconveh_question_mark,
+ tmpsrc, count,
+ NULL,
+ NULL, &tmpdst_len);
+ if (tmpdst == NULL)
+ {
+ int saved_errno = errno;
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ CLEANUP ();
+ errno = saved_errno;
+ return NULL;
+ }
+ ENSURE_ALLOCATION (xsum (length, tmpdst_len));
+ DCHAR_CPY (result + length, tmpdst, tmpdst_len);
+ free (tmpdst);
+ count = tmpdst_len;
+ }
+ else
+ {
+ /* The result string is ASCII.
+ Simple 1:1 conversion. */
# if USE_SNPRINTF
- /* If sizeof (DCHAR_T) == sizeof (TCHAR_T), it's a
- no-op conversion, in-place on the array starting
- at (result + length). */
- if (sizeof (DCHAR_T) != sizeof (TCHAR_T))
+ /* If sizeof (DCHAR_T) == sizeof (TCHAR_T), it's a
+ no-op conversion, in-place on the array starting
+ at (result + length). */
+ if (sizeof (DCHAR_T) != sizeof (TCHAR_T))
# endif
- {
- const TCHAR_T *tmpsrc;
- DCHAR_T *tmpdst;
- size_t n;
+ {
+ const TCHAR_T *tmpsrc;
+ DCHAR_T *tmpdst;
+ size_t n;
# if USE_SNPRINTF
- if (result == resultbuf)
- {
- tmpsrc = (TCHAR_T *) (result + length);
- /* ENSURE_ALLOCATION will not move tmpsrc
- (because it's part of resultbuf). */
- ENSURE_ALLOCATION (xsum (length, count));
- }
- else
- {
- /* ENSURE_ALLOCATION will move the array
- (because it uses realloc(). */
- ENSURE_ALLOCATION (xsum (length, count));
- tmpsrc = (TCHAR_T *) (result + length);
- }
+ if (result == resultbuf)
+ {
+ tmpsrc = (TCHAR_T *) (result + length);
+ /* ENSURE_ALLOCATION will not move tmpsrc
+ (because it's part of resultbuf). */
+ ENSURE_ALLOCATION (xsum (length, count));
+ }
+ else
+ {
+ /* ENSURE_ALLOCATION will move the array
+ (because it uses realloc(). */
+ ENSURE_ALLOCATION (xsum (length, count));
+ tmpsrc = (TCHAR_T *) (result + length);
+ }
# else
- tmpsrc = tmp;
- ENSURE_ALLOCATION (xsum (length, count));
+ tmpsrc = tmp;
+ ENSURE_ALLOCATION (xsum (length, count));
# endif
- tmpdst = result + length;
- /* Copy backwards, because of overlapping. */
- tmpsrc += count;
- tmpdst += count;
- for (n = count; n > 0; n--)
- *--tmpdst = (unsigned char) *--tmpsrc;
- }
- }
+ tmpdst = result + length;
+ /* Copy backwards, because of overlapping. */
+ tmpsrc += count;
+ tmpdst += count;
+ for (n = count; n > 0; n--)
+ *--tmpdst = (unsigned char) *--tmpsrc;
+ }
+ }
#endif
#if DCHAR_IS_TCHAR && !USE_SNPRINTF
- /* Make room for the result. */
- if (count > allocated - length)
- {
- /* Need at least count elements. But allocate
- proportionally. */
- size_t n =
- xmax (xsum (length, count), xtimes (allocated, 2));
-
- ENSURE_ALLOCATION (n);
- }
+ /* Make room for the result. */
+ if (count > allocated - length)
+ {
+ /* Need at least count elements. But allocate
+ proportionally. */
+ size_t n =
+ xmax (xsum (length, count), xtimes (allocated, 2));
+
+ ENSURE_ALLOCATION (n);
+ }
#endif
- /* Here count <= allocated - length. */
+ /* Here count <= allocated - length. */
- /* Perform padding. */
-#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_ZERO
- if (pad_ourselves && has_width)
- {
- size_t w;
+ /* Perform padding. */
+#if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+ if (pad_ourselves && has_width)
+ {
+ size_t w;
# if ENABLE_UNISTDIO
- /* Outside POSIX, it's preferrable to compare the width
- against the number of _characters_ of the converted
- value. */
- w = DCHAR_MBSNLEN (result + length, count);
+ /* Outside POSIX, it's preferable to compare the width
+ against the number of _characters_ of the converted
+ value. */
+ w = DCHAR_MBSNLEN (result + length, count);
# else
- /* The width is compared against the number of _bytes_
- of the converted value, says POSIX. */
- w = count;
+ /* The width is compared against the number of _bytes_
+ of the converted value, says POSIX. */
+ w = count;
# endif
- if (w < width)
- {
- size_t pad = width - w;
+ if (w < width)
+ {
+ size_t pad = width - w;
+
+ /* Make room for the result. */
+ if (xsum (count, pad) > allocated - length)
+ {
+ /* Need at least count + pad elements. But
+ allocate proportionally. */
+ size_t n =
+ xmax (xsum3 (length, count, pad),
+ xtimes (allocated, 2));
+
# if USE_SNPRINTF
- /* Make room for the result. */
- if (xsum (count, pad) > allocated - length)
- {
- /* Need at least count + pad elements. But
- allocate proportionally. */
- size_t n =
- xmax (xsum3 (length, count, pad),
- xtimes (allocated, 2));
-
- length += count;
- ENSURE_ALLOCATION (n);
- length -= count;
- }
- /* Here count + pad <= allocated - length. */
+ length += count;
+ ENSURE_ALLOCATION (n);
+ length -= count;
+# else
+ ENSURE_ALLOCATION (n);
# endif
- {
+ }
+ /* Here count + pad <= allocated - length. */
+
+ {
# if !DCHAR_IS_TCHAR || USE_SNPRINTF
- DCHAR_T * const rp = result + length;
+ DCHAR_T * const rp = result + length;
# else
- DCHAR_T * const rp = tmp;
+ DCHAR_T * const rp = tmp;
# endif
- DCHAR_T *p = rp + count;
- DCHAR_T *end = p + pad;
-# if NEED_PRINTF_FLAG_ZERO
- DCHAR_T *pad_ptr;
-# if !DCHAR_IS_TCHAR
- if (dp->conversion == 'c'
- || dp->conversion == 's')
- /* No zero-padding for string directives. */
- pad_ptr = NULL;
- else
-# endif
- {
- pad_ptr = (*rp == '-' ? rp + 1 : rp);
- /* No zero-padding of "inf" and "nan". */
- if ((*pad_ptr >= 'A' && *pad_ptr <= 'Z')
- || (*pad_ptr >= 'a' && *pad_ptr <= 'z'))
- pad_ptr = NULL;
- }
-# endif
- /* The generated string now extends from rp to p,
- with the zero padding insertion point being at
- pad_ptr. */
-
- count = count + pad; /* = end - rp */
-
- if (flags & FLAG_LEFT)
- {
- /* Pad with spaces on the right. */
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
-# if NEED_PRINTF_FLAG_ZERO
- else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
- {
- /* Pad with zeroes. */
- DCHAR_T *q = end;
-
- while (p > pad_ptr)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = '0';
- }
+ DCHAR_T *p = rp + count;
+ DCHAR_T *end = p + pad;
+ DCHAR_T *pad_ptr;
+# if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO
+ if (dp->conversion == 'c'
+ || dp->conversion == 's')
+ /* No zero-padding for string directives. */
+ pad_ptr = NULL;
+ else
# endif
- else
- {
- /* Pad with spaces on the left. */
- DCHAR_T *q = end;
-
- while (p > rp)
- *--q = *--p;
- for (; pad > 0; pad--)
- *p++ = ' ';
- }
- }
- }
- }
-#endif
-
-#if DCHAR_IS_TCHAR && !USE_SNPRINTF
- if (count >= tmp_length)
- /* tmp_length was incorrectly calculated - fix the
- code above! */
- abort ();
+ {
+ pad_ptr = (*rp == '-' ? rp + 1 : rp);
+ /* No zero-padding of "inf" and "nan". */
+ if ((*pad_ptr >= 'A' && *pad_ptr <= 'Z')
+ || (*pad_ptr >= 'a' && *pad_ptr <= 'z'))
+ pad_ptr = NULL;
+ }
+ /* The generated string now extends from rp to p,
+ with the zero padding insertion point being at
+ pad_ptr. */
+
+ count = count + pad; /* = end - rp */
+
+ if (flags & FLAG_LEFT)
+ {
+ /* Pad with spaces on the right. */
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+ else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+ {
+ /* Pad with zeroes. */
+ DCHAR_T *q = end;
+
+ while (p > pad_ptr)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = '0';
+ }
+ else
+ {
+ /* Pad with spaces on the left. */
+ DCHAR_T *q = end;
+
+ while (p > rp)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+ }
+ }
+ }
#endif
- /* Here still count <= allocated - length. */
+ /* Here still count <= allocated - length. */
#if !DCHAR_IS_TCHAR || USE_SNPRINTF
- /* The snprintf() result did fit. */
+ /* The snprintf() result did fit. */
#else
- /* Append the sprintf() result. */
- memcpy (result + length, tmp, count * sizeof (DCHAR_T));
+ /* Append the sprintf() result. */
+ memcpy (result + length, tmp, count * sizeof (DCHAR_T));
#endif
#if !USE_SNPRINTF
- if (tmp != tmpbuf)
- free (tmp);
+ if (tmp != tmpbuf)
+ free (tmp);
#endif
#if NEED_PRINTF_DIRECTIVE_F
- if (dp->conversion == 'F')
- {
- /* Convert the %f result to upper case for %F. */
- DCHAR_T *rp = result + length;
- size_t rc;
- for (rc = count; rc > 0; rc--, rp++)
- if (*rp >= 'a' && *rp <= 'z')
- *rp = *rp - 'a' + 'A';
- }
+ if (dp->conversion == 'F')
+ {
+ /* Convert the %f result to upper case for %F. */
+ DCHAR_T *rp = result + length;
+ size_t rc;
+ for (rc = count; rc > 0; rc--, rp++)
+ if (*rp >= 'a' && *rp <= 'z')
+ *rp = *rp - 'a' + 'A';
+ }
#endif
- length += count;
- break;
- }
- }
- }
+ length += count;
+ break;
+ }
+ errno = orig_errno;
+#undef pad_ourselves
+#undef prec_ourselves
+ }
+ }
}
/* Add the final NUL. */
if (result != resultbuf && length + 1 < allocated)
{
- /* Shrink the allocated memory if possible. */
- DCHAR_T *memory;
+ /* Shrink the allocated memory if possible. */
+ DCHAR_T *memory;
- memory = (DCHAR_T *) realloc (result, (length + 1) * sizeof (DCHAR_T));
- if (memory != NULL)
- result = memory;
+ memory = (DCHAR_T *) realloc (result, (length + 1) * sizeof (DCHAR_T));
+ if (memory != NULL)
+ result = memory;
}
if (buf_malloced != NULL)
not have this limitation. */
return result;
+#if USE_SNPRINTF
overflow:
if (!(result == resultbuf || result == NULL))
free (result);
CLEANUP ();
errno = EOVERFLOW;
return NULL;
+#endif
out_of_memory:
if (!(result == resultbuf || result == NULL))
}
}
+#undef MAX_ROOM_NEEDED
#undef TCHARS_PER_DCHAR
#undef SNPRINTF
#undef USE_SNPRINTF
+#undef DCHAR_SET
+#undef DCHAR_CPY
#undef PRINTF_PARSE
#undef DIRECTIVES
#undef DIRECTIVE
+#undef DCHAR_IS_TCHAR
#undef TCHAR_T
#undef DCHAR_T
#undef FCHAR_T
projects / gnulib.git / blobdiff