abort ();
}
}
-#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')
- && (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))
-# endif
-# if NEED_PRINTF_LONG_DOUBLE
- || 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))
-# endif
- ))
+#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
+ else if (dp->conversion == 'a' || dp->conversion == 'A')
{
-# if 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;
}
}
- /* 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);
-# elif NEED_PRINTF_LONG_DOUBLE
- tmp_length = LDBL_DIG + 1;
-# else
- tmp_length = 0;
-# endif
+ 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;
-# if NEED_PRINTF_LONG_DOUBLE
-# if 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
/* Account for sign, decimal point etc. */
tmp_length = xsum (tmp_length, 12);
pad_ptr = NULL;
p = tmp;
-
-# if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
-# if 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')
+ if (dp->conversion == 'A')
{
*p++ = 'N'; *p++ = 'A'; *p++ = 'N';
}
if (arg > 0.0L && arg + arg == arg)
{
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ if (dp->conversion == 'A')
{
*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
}
}
else
{
-# if NEED_PRINTF_LONG_DOUBLE
- pad_ptr = p;
+ int exponent;
+ long double mantissa;
- if (dp->conversion == 'f' || dp->conversion == 'F')
+ if (arg > 0.0L)
+ mantissa = printf_frexpl (arg, &exponent);
+ else
{
- 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);
+ exponent = 0;
+ mantissa = 0.0L;
}
- else if (dp->conversion == 'e' || dp->conversion == 'E')
+
+ if (has_precision
+ && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
{
- int exponent;
+ /* Round the mantissa. */
+ long double tail = mantissa;
+ size_t q;
- 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
+ for (q = precision; ; q--)
{
- /* arg > 0.0L. */
- int adjusted;
- char *digits;
- size_t ndigits;
-
- exponent = floorlog10l (arg);
- adjusted = 0;
- for (;;)
+ int digit = (int) tail;
+ tail -= digit;
+ if (q == 0)
{
- 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;
+ if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
+ tail = 1 - tail;
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];
- }
+ tail = - tail;
+ break;
}
-
- free (digits);
+ tail *= 16.0L;
}
+ if (tail != 0.0L)
+ for (q = precision; q > 0; q--)
+ tail *= 0.0625L;
+ mantissa += tail;
+ }
- *p++ = dp->conversion; /* 'e' or 'E' */
-# if WIDE_CHAR_VERSION
+ *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)
{
- static const wchar_t decimal_format[] =
- { '%', '+', '.', '2', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ *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--;
+ }
}
-# else
- sprintf (p, "%+.2d", exponent);
-# endif
- while (*p != '\0')
- p++;
}
- else if (dp->conversion == 'g' || dp->conversion == 'G')
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
{
- 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' */
-# if WIDE_CHAR_VERSION
- {
- static const wchar_t decimal_format[] =
- { '%', '+', '.', '2', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
- }
-# else
- sprintf (p, "%+.2d", exponent);
-# endif
- while (*p != '\0')
- p++;
- }
-
- free (digits);
- }
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
}
- else
- abort ();
-# else
- /* arg is finite. */
- abort ();
-# endif
+# else
+ sprintf (p, "%+d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
}
END_LONG_DOUBLE_ROUNDING ();
}
}
-# if 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')
+ if (dp->conversion == 'A')
{
*p++ = 'N'; *p++ = 'A'; *p++ = 'N';
}
{
int sign = 0;
- if (signbit (arg)) /* arg < 0.0L or negative zero */
+ if (signbit (arg)) /* arg < 0.0 or negative zero */
{
sign = -1;
arg = -arg;
if (arg > 0.0 && arg + arg == arg)
{
- if (dp->conversion >= 'A' && dp->conversion <= 'Z')
+ if (dp->conversion == 'A')
{
*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
}
}
else
{
- if (!(arg == 0.0))
- abort ();
+ int exponent;
+ double mantissa;
- pad_ptr = p;
+ if (arg > 0.0)
+ mantissa = printf_frexp (arg, &exponent);
+ else
+ {
+ exponent = 0;
+ mantissa = 0.0;
+ }
- if (dp->conversion == 'f' || dp->conversion == 'F')
+ if (has_precision
+ && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
{
- *p++ = '0';
- if ((flags & FLAG_ALT) || precision > 0)
+ /* Round the mantissa. */
+ double tail = mantissa;
+ size_t q;
+
+ for (q = precision; ; q--)
{
- *p++ = decimal_point_char ();
- for (; precision > 0; precision--)
- *p++ = '0';
+ 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;
}
- 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 - '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';
- }
- *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';
+ precision--;
+ }
+ }
}
- else if (dp->conversion == 'g' || dp->conversion == 'G')
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
{
- *p++ = '0';
- if (flags & FLAG_ALT)
- {
- size_t ndigits =
- (precision > 0 ? precision - 1 : 0);
- *p++ = decimal_point_char ();
- for (; ndigits > 0; --ndigits)
- *p++ = '0';
- }
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
}
- else
- abort ();
+# else
+ sprintf (p, "%+d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
}
}
}
-# 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)
}
}
#endif
-#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
- else if (dp->conversion == 'a' || dp->conversion == 'A')
+#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))
+# endif
+# if NEED_PRINTF_LONG_DOUBLE
+ || 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))
+# endif
+ ))
{
+# if 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;
}
}
+ /* 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 (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 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;
+# else
+ tmp_length = 0;
+# endif
if (tmp_length < precision)
tmp_length = precision;
+# if NEED_PRINTF_LONG_DOUBLE
+# if 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
/* Account for sign, decimal point etc. */
tmp_length = xsum (tmp_length, 12);
pad_ptr = NULL;
p = tmp;
+
+# if NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE
+# if 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')
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
{
*p++ = 'N'; *p++ = 'A'; *p++ = 'N';
}
if (arg > 0.0L && arg + arg == arg)
{
- if (dp->conversion == 'A')
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
{
*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
}
}
else
{
- int exponent;
- long double mantissa;
+# if NEED_PRINTF_LONG_DOUBLE
+ pad_ptr = p;
- if (arg > 0.0L)
- mantissa = printf_frexpl (arg, &exponent);
- else
+ if (dp->conversion == 'f' || dp->conversion == 'F')
{
- exponent = 0;
- mantissa = 0.0L;
+ 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 (has_precision
- && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
+ 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' */
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', '.', '2', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+# else
+ sprintf (p, "%+.2d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
+ }
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
{
- /* Round the mantissa. */
- long double tail = mantissa;
- size_t q;
+ 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++;
- for (q = precision; ; q--)
- {
- int digit = (int) tail;
- tail -= digit;
- if (q == 0)
+ /* The exponent is now determined. */
+ if (exponent >= -4
+ && exponent < (long)precision)
{
- if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
- tail = 1 - tail;
+ /* 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
- tail = - tail;
- break;
+ {
+ 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);
+ }
+# else
+ sprintf (p, "%+.2d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
}
- 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);
+ free (digits);
+ }
}
-# else
- sprintf (p, "%+d", exponent);
-# endif
- while (*p != '\0')
- p++;
+ else
+ abort ();
+# else
+ /* arg is finite. */
+ abort ();
+# endif
}
END_LONG_DOUBLE_ROUNDING ();
}
}
+# if 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')
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
{
*p++ = 'N'; *p++ = 'A'; *p++ = 'N';
}
{
int sign = 0;
- if (signbit (arg)) /* arg < 0.0 or negative zero */
+ if (signbit (arg)) /* arg < 0.0L or negative zero */
{
sign = -1;
arg = -arg;
if (arg > 0.0 && arg + arg == arg)
{
- if (dp->conversion == 'A')
+ if (dp->conversion >= 'A' && dp->conversion <= 'Z')
{
*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
}
}
else
{
- int exponent;
- double mantissa;
+ if (!(arg == 0.0))
+ abort ();
- if (arg > 0.0)
- mantissa = printf_frexp (arg, &exponent);
- else
- {
- exponent = 0;
- mantissa = 0.0;
- }
+ pad_ptr = p;
- if (has_precision
- && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
+ if (dp->conversion == 'f' || dp->conversion == 'F')
{
- /* Round the mantissa. */
- double tail = mantissa;
- size_t q;
-
- for (q = precision; ; q--)
+ *p++ = '0';
+ if ((flags & FLAG_ALT) || precision > 0)
{
- 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;
+ *p++ = decimal_point_char ();
+ for (; precision > 0; precision--)
+ *p++ = '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)
- {
+ 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';
- precision--;
- }
- }
+ }
+ *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';
}
- *p++ = dp->conversion - 'A' + 'P';
-# if WIDE_CHAR_VERSION
+ else if (dp->conversion == 'g' || dp->conversion == 'G')
{
- static const wchar_t decimal_format[] =
- { '%', '+', 'd', '\0' };
- SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ *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
- sprintf (p, "%+d", exponent);
-# endif
- while (*p != '\0')
- p++;
+ 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)
projects / gnulib.git / commitdiff