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isinf returns the sign of the number, use it in printf*

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This commit is contained in:
Ulrich Drepper 2011-10-08 08:22:44 -04:00
parent 9277c06437
commit 187da0aedc
4 changed files with 32 additions and 23 deletions
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5
ChangeLog
View File

@ -1,5 +1,10 @@
2011-10-08 Ulrich Drepper <drepper@gmail.com>
* stdio-common/printf_fp.c: Use the fact that isinf returns the sign
of the number.
* stdio-common/printf_fphex.c: Likewise.
* stdio-common/printf_size.c: Likewise.
* math/e_exp10.c: Include math_private.h using <...> not "...".
* math/e_exp10f.c: Likewise.
* math/e_exp10l.c: Likewise.

10
stdio-common/printf_fp.c
View File

@ -334,6 +334,7 @@ ___printf_fp (FILE *fp,
fpnum.ldbl = *(const long double *) args[0];
/* Check for special values: not a number or infinity. */
int res;
if (__isnanl (fpnum.ldbl))
{
union ieee854_long_double u = { .d = fpnum.ldbl };
@ -349,9 +350,9 @@ ___printf_fp (FILE *fp,
wspecial = L"nan";
}
}
else if (__isinfl (fpnum.ldbl))
else if ((res = __isinfl (fpnum.ldbl)))
{
is_neg = fpnum.ldbl < 0;
is_neg = res < 0;
if (isupper (info->spec))
{
special = "INF";
@ -379,6 +380,7 @@ ___printf_fp (FILE *fp,
fpnum.dbl = *(const double *) args[0];
/* Check for special values: not a number or infinity. */
int res;
if (__isnan (fpnum.dbl))
{
union ieee754_double u = { .d = fpnum.dbl };
@ -394,9 +396,9 @@ ___printf_fp (FILE *fp,
wspecial = L"nan";
}
}
else if (__isinf (fpnum.dbl))
else if ((res = __isinf (fpnum.dbl)))
{
is_neg = fpnum.dbl < 0;
is_neg = res < 0;
if (isupper (info->spec))
{
special = "INF";

16
stdio-common/printf_fphex.c
View File

@ -180,7 +180,8 @@ __printf_fphex (FILE *fp,
}
else
{
if (__isinfl (fpnum.ldbl.d))
int res = __isinfl (fpnum.ldbl.d);
if (res)
{
if (isupper (info->spec))
{
@ -192,9 +193,10 @@ __printf_fphex (FILE *fp,
special = "inf";
wspecial = L"inf";
}
negative = res < 0;
}
negative = signbit (fpnum.ldbl.d);
else
negative = signbit (fpnum.ldbl.d);
}
}
else
@ -219,7 +221,8 @@ __printf_fphex (FILE *fp,
}
else
{
if (__isinf (fpnum.dbl.d))
int res = __isinf (fpnum.dbl.d);
if (res)
{
if (isupper (info->spec))
{
@ -231,9 +234,10 @@ __printf_fphex (FILE *fp,
special = "inf";
wspecial = L"inf";
}
negative = res < 0;
}
negative = signbit (fpnum.dbl.d);
else
negative = signbit (fpnum.dbl.d);
}
}

24
stdio-common/printf_size.c
View File

@ -1,5 +1,5 @@
/* Print size value using units for orders of magnitude.
Copyright (C) 1997-2002, 2004, 2006 Free Software Foundation, Inc.
Copyright (C) 1997-2002, 2004, 2006, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
Based on a proposal by Larry McVoy <lm@sgi.com>.
@ -109,7 +109,7 @@ __printf_size (FILE *fp, const struct printf_info *info,
fpnum;
const void *ptr = &fpnum;
int negative = 0;
int fpnum_sign = 0;
/* "NaN" or "Inf" for the special cases. */
const char *special = NULL;
@ -118,7 +118,7 @@ __printf_size (FILE *fp, const struct printf_info *info,
struct printf_info fp_info;
int done = 0;
int wide = info->wide;
int res;
/* Fetch the argument value. */
#ifndef __NO_LONG_DOUBLE_MATH
@ -131,14 +131,13 @@ __printf_size (FILE *fp, const struct printf_info *info,
{
special = "nan";
wspecial = L"nan";
negative = 0;
// fpnum_sign = 0; Already zero
}
else if (__isinfl (fpnum.ldbl.d))
else if ((res = __isinfl (fpnum.ldbl.d)))
{
fpnum_sign = res;
special = "inf";
wspecial = L"inf";
negative = fpnum.ldbl.d < 0;
}
else
while (fpnum.ldbl.d >= divisor && tag[1] != '\0')
@ -157,14 +156,13 @@ __printf_size (FILE *fp, const struct printf_info *info,
{
special = "nan";
wspecial = L"nan";
negative = 0;
// fpnum_sign = 0; Already zero
}
else if (__isinf (fpnum.dbl.d))
else if ((res = __isinf (fpnum.dbl.d)))
{
fpnum_sign = res;
special = "inf";
wspecial = L"inf";
negative = fpnum.dbl.d < 0;
}
else
while (fpnum.dbl.d >= divisor && tag[1] != '\0')
@ -178,14 +176,14 @@ __printf_size (FILE *fp, const struct printf_info *info,
{
int width = info->prec > info->width ? info->prec : info->width;
if (negative || info->showsign || info->space)
if (fpnum_sign < 0 || info->showsign || info->space)
--width;
width -= 3;
if (!info->left && width > 0)
PADN (' ', width);
if (negative)
if (fpnum_sign < 0)
outchar ('-');
else if (info->showsign)
outchar ('+');