/* Convert string representation of a number into an integer value.
- Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2003, 2005,
+ 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C
Library. Bugs can be reported to bug-glibc@gnu.org.
- This program is free software; you can redistribute it and/or modify it
+ 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 the
- Free Software Foundation; either version 2, or (at your option) any
+ Free Software Foundation; either version 3 of the License, or any
later version.
This program is distributed in the hope that it will be useful,
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef _LIBC
# define USE_NUMBER_GROUPING
+#else
+# include <config.h>
#endif
#include <ctype.h>
#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
#ifndef __set_errno
# define __set_errno(Val) errno = (Val)
#endif
# define STRTOL_LONG_MAX LONG_LONG_MAX
# define STRTOL_ULONG_MAX ULONG_LONG_MAX
-/* The extra casts work around common compiler bugs,
- e.g. Cray C 5.0.3.0 when t == time_t. */
-# ifndef TYPE_SIGNED
-# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
-# endif
-# ifndef TYPE_MINIMUM
-# define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
- ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
- : (t) 0))
-# endif
-# ifndef TYPE_MAXIMUM
-# define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
-# endif
+/* The extra casts in the following macros work around compiler bugs,
+ e.g., in Cray C 5.0.3.0. */
+
+/* True if negative values of the signed integer type T use two's
+ complement, ones' complement, or signed magnitude representation,
+ respectively. Much GNU code assumes two's complement, but some
+ people like to be portable to all possible C hosts. */
+# define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1)
+# define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0)
+# define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1)
+
+/* True if the arithmetic type T is signed. */
+# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* The maximum and minimum values for the integer type T. These
+ macros have undefined behavior if T is signed and has padding bits.
+ If this is a problem for you, please let us know how to fix it for
+ your host. */
+# define TYPE_MINIMUM(t) \
+ ((t) (! TYPE_SIGNED (t) \
+ ? (t) 0 \
+ : TYPE_SIGNED_MAGNITUDE (t) \
+ ? ~ (t) 0 \
+ : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))
+# define TYPE_MAXIMUM(t) \
+ ((t) (! TYPE_SIGNED (t) \
+ ? (t) -1 \
+ : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
# ifndef ULONG_LONG_MAX
# define ULONG_LONG_MAX TYPE_MAXIMUM (unsigned long long)
# define LOCALE_PARAM_PROTO
#endif
-#if defined _LIBC || defined HAVE_WCHAR_H
-# include <wchar.h>
-#endif
+#include <wchar.h>
#ifdef USE_WIDE_CHAR
# include <wctype.h>
# define TOUPPER(Ch) towupper (Ch)
# endif
#else
-# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
-# define IN_CTYPE_DOMAIN(c) 1
-# else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-# endif
# define L_(Ch) Ch
# define UCHAR_TYPE unsigned char
# define STRING_TYPE char
# define ISALPHA(Ch) __isalpha_l ((Ch), loc)
# define TOUPPER(Ch) __toupper_l ((Ch), loc)
# else
-# define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch))
-# define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
-# define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch))
+# define ISSPACE(Ch) isspace (Ch)
+# define ISALPHA(Ch) isalpha (Ch)
+# define TOUPPER(Ch) toupper (Ch)
# endif
#endif
INT
INTERNAL (strtol) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
- int base, int group LOCALE_PARAM_PROTO)
+ int base, int group LOCALE_PARAM_PROTO)
{
int negative;
register unsigned LONG int cutoff;
{
grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
if (*grouping <= 0 || *grouping == CHAR_MAX)
- grouping = NULL;
+ grouping = NULL;
else
- {
- /* Figure out the thousands separator character. */
+ {
+ /* Figure out the thousands separator character. */
# if defined _LIBC || defined _HAVE_BTOWC
- thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
- if (thousands == WEOF)
- thousands = L'\0';
+ thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
+ if (thousands == WEOF)
+ thousands = L'\0';
# endif
- if (thousands == L'\0')
- grouping = NULL;
- }
+ if (thousands == L'\0')
+ grouping = NULL;
+ }
}
else
grouping = NULL;
if (*s == L_('0'))
{
if ((base == 0 || base == 16) && TOUPPER (s[1]) == L_('X'))
- {
- s += 2;
- base = 16;
- }
+ {
+ s += 2;
+ base = 16;
+ }
else if (base == 0)
- base = 8;
+ base = 8;
}
else if (base == 0)
base = 10;
/* Find the end of the digit string and check its grouping. */
end = s;
for (c = *end; c != L_('\0'); c = *++end)
- if ((wchar_t) c != thousands
- && ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
- && (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
- break;
+ if ((wchar_t) c != thousands
+ && ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
+ && (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
+ break;
if (*s == thousands)
- end = s;
+ end = s;
else
- end = correctly_grouped_prefix (s, end, thousands, grouping);
+ end = correctly_grouped_prefix (s, end, thousands, grouping);
}
else
#endif
for (c = *s; c != L_('\0'); c = *++s)
{
if (s == end)
- break;
+ break;
if (c >= L_('0') && c <= L_('9'))
- c -= L_('0');
+ c -= L_('0');
else if (ISALPHA (c))
- c = TOUPPER (c) - L_('A') + 10;
+ c = TOUPPER (c) - L_('A') + 10;
else
- break;
+ break;
if ((int) c >= base)
- break;
+ break;
/* Check for overflow. */
if (i > cutoff || (i == cutoff && c > cutlim))
- overflow = 1;
+ overflow = 1;
else
- {
- i *= (unsigned LONG int) base;
- i += c;
- }
+ {
+ i *= (unsigned LONG int) base;
+ i += c;
+ }
}
/* Check if anything actually happened. */
`unsigned LONG int', but outside the range of `LONG int'. */
if (overflow == 0
&& i > (negative
- ? -((unsigned LONG int) (STRTOL_LONG_MIN + 1)) + 1
- : (unsigned LONG int) STRTOL_LONG_MAX))
+ ? -((unsigned LONG int) (STRTOL_LONG_MIN + 1)) + 1
+ : (unsigned LONG int) STRTOL_LONG_MAX))
overflow = 1;
#endif
if (endptr != NULL)
{
if (save - nptr >= 2 && TOUPPER (save[-1]) == L_('X')
- && save[-2] == L_('0'))
- *endptr = (STRING_TYPE *) &save[-1];
+ && save[-2] == L_('0'))
+ *endptr = (STRING_TYPE *) &save[-1];
else
- /* There was no number to convert. */
- *endptr = (STRING_TYPE *) nptr;
+ /* There was no number to convert. */
+ *endptr = (STRING_TYPE *) nptr;
}
return 0L;
weak_function
#endif
strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr,
- int base LOCALE_PARAM_PROTO)
+ int base LOCALE_PARAM_PROTO)
{
return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM);
}