mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
231 lines
6.0 KiB
C
231 lines
6.0 KiB
C
/* Print size value using units for orders of magnitude.
|
||
Copyright (C) 1997-2021 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>.
|
||
|
||
The GNU C Library is free software; you can redistribute it and/or
|
||
modify it under the terms of the GNU Lesser General Public
|
||
License as published by the Free Software Foundation; either
|
||
version 2.1 of the License, or (at your option) any later version.
|
||
|
||
The GNU C Library is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
Lesser General Public License for more details.
|
||
|
||
You should have received a copy of the GNU Lesser General Public
|
||
License along with the GNU C Library; if not, see
|
||
<https://www.gnu.org/licenses/>. */
|
||
|
||
#include <ctype.h>
|
||
#include <ieee754.h>
|
||
#include <math.h>
|
||
#include <printf.h>
|
||
#include <libioP.h>
|
||
|
||
#define PUT(f, s, n) _IO_sputn (f, s, n)
|
||
#define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : _IO_padn (f, c, n))
|
||
#undef putc
|
||
#define putc(c, f) (wide \
|
||
? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f))
|
||
|
||
|
||
/* Macros for doing the actual output. */
|
||
|
||
#define outchar(ch) \
|
||
do \
|
||
{ \
|
||
const int outc = (ch); \
|
||
if (putc (outc, fp) == EOF) \
|
||
return -1; \
|
||
++done; \
|
||
} while (0)
|
||
|
||
#define PRINT(ptr, wptr, len) \
|
||
do \
|
||
{ \
|
||
size_t outlen = (len); \
|
||
if (len > 20) \
|
||
{ \
|
||
if (PUT (fp, wide ? (const char *) wptr : ptr, outlen) != outlen) \
|
||
return -1; \
|
||
ptr += outlen; \
|
||
done += outlen; \
|
||
} \
|
||
else \
|
||
{ \
|
||
if (wide) \
|
||
while (outlen-- > 0) \
|
||
outchar (*wptr++); \
|
||
else \
|
||
while (outlen-- > 0) \
|
||
outchar (*ptr++); \
|
||
} \
|
||
} while (0)
|
||
|
||
#define PADN(ch, len) \
|
||
do \
|
||
{ \
|
||
if (PAD (fp, ch, len) != len) \
|
||
return -1; \
|
||
done += len; \
|
||
} \
|
||
while (0)
|
||
|
||
/* Prototype for helper functions. */
|
||
extern int __printf_fp (FILE *fp, const struct printf_info *info,
|
||
const void *const *args);
|
||
|
||
|
||
int
|
||
__printf_size (FILE *fp, const struct printf_info *info,
|
||
const void *const *args)
|
||
{
|
||
/* Units for the both formats. */
|
||
#define BINARY_UNITS " kmgtpezy"
|
||
#define DECIMAL_UNITS " KMGTPEZY"
|
||
static const char units[2][sizeof (BINARY_UNITS)] =
|
||
{
|
||
BINARY_UNITS, /* For binary format. */
|
||
DECIMAL_UNITS /* For decimal format. */
|
||
};
|
||
const char *tag = units[isupper (info->spec) != 0];
|
||
int divisor = isupper (info->spec) ? 1000 : 1024;
|
||
|
||
/* The floating-point value to output. */
|
||
union
|
||
{
|
||
union ieee754_double dbl;
|
||
long double ldbl;
|
||
#if __HAVE_DISTINCT_FLOAT128
|
||
_Float128 f128;
|
||
#endif
|
||
}
|
||
fpnum;
|
||
const void *ptr = &fpnum;
|
||
|
||
int is_neg = 0;
|
||
|
||
/* "NaN" or "Inf" for the special cases. */
|
||
const char *special = NULL;
|
||
const wchar_t *wspecial = NULL;
|
||
|
||
struct printf_info fp_info;
|
||
int done = 0;
|
||
int wide = info->wide;
|
||
|
||
#define PRINTF_SIZE_FETCH(FLOAT, VAR) \
|
||
{ \
|
||
(VAR) = *(const FLOAT *) args[0]; \
|
||
\
|
||
/* Check for special values: not a number or infinity. */ \
|
||
if (isnan (VAR)) \
|
||
{ \
|
||
special = "nan"; \
|
||
wspecial = L"nan"; \
|
||
/* is_neg = 0; Already zero */ \
|
||
} \
|
||
else if (isinf (VAR)) \
|
||
{ \
|
||
is_neg = signbit (VAR); \
|
||
special = "inf"; \
|
||
wspecial = L"inf"; \
|
||
} \
|
||
else \
|
||
while ((VAR) >= divisor && tag[1] != '\0') \
|
||
{ \
|
||
(VAR) /= divisor; \
|
||
++tag; \
|
||
} \
|
||
}
|
||
|
||
/* Fetch the argument value. */
|
||
#if __HAVE_DISTINCT_FLOAT128
|
||
if (info->is_binary128)
|
||
PRINTF_SIZE_FETCH (_Float128, fpnum.f128)
|
||
else
|
||
#endif
|
||
#ifndef __NO_LONG_DOUBLE_MATH
|
||
if (info->is_long_double && sizeof (long double) > sizeof (double))
|
||
PRINTF_SIZE_FETCH (long double, fpnum.ldbl)
|
||
else
|
||
#endif
|
||
PRINTF_SIZE_FETCH (double, fpnum.dbl.d)
|
||
|
||
#undef PRINTF_SIZE_FETCH
|
||
|
||
if (special)
|
||
{
|
||
int width = info->prec > info->width ? info->prec : info->width;
|
||
|
||
if (is_neg || info->showsign || info->space)
|
||
--width;
|
||
width -= 3;
|
||
|
||
if (!info->left && width > 0)
|
||
PADN (' ', width);
|
||
|
||
if (is_neg)
|
||
outchar ('-');
|
||
else if (info->showsign)
|
||
outchar ('+');
|
||
else if (info->space)
|
||
outchar (' ');
|
||
|
||
PRINT (special, wspecial, 3);
|
||
|
||
if (info->left && width > 0)
|
||
PADN (' ', width);
|
||
|
||
return done;
|
||
}
|
||
|
||
/* Prepare to print the number. We want to use `__printf_fp' so we
|
||
have to prepare a `printf_info' structure. */
|
||
fp_info = *info;
|
||
fp_info.spec = 'f';
|
||
fp_info.prec = info->prec < 0 ? 3 : info->prec;
|
||
fp_info.wide = wide;
|
||
|
||
if (fp_info.left && fp_info.pad == L' ')
|
||
{
|
||
/* We must do the padding ourself since the unit character must
|
||
be placed before the padding spaces. */
|
||
fp_info.width = 0;
|
||
|
||
done = __printf_fp (fp, &fp_info, &ptr);
|
||
if (done > 0)
|
||
{
|
||
outchar (*tag);
|
||
if (info->width > done)
|
||
PADN (' ', info->width - done);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We can let __printf_fp do all the printing and just add our
|
||
unit character afterwards. */
|
||
fp_info.width = info->width - 1;
|
||
|
||
done = __printf_fp (fp, &fp_info, &ptr);
|
||
if (done > 0)
|
||
outchar (*tag);
|
||
}
|
||
|
||
return done;
|
||
}
|
||
ldbl_strong_alias (__printf_size, printf_size);
|
||
|
||
/* This is the function used by `vfprintf' to determine number and
|
||
type of the arguments. */
|
||
int
|
||
printf_size_info (const struct printf_info *info, size_t n, int *argtypes)
|
||
{
|
||
/* We need only one double or long double argument. */
|
||
if (n >= 1)
|
||
argtypes[0] = PA_DOUBLE | (info->is_long_double ? PA_FLAG_LONG_DOUBLE : 0);
|
||
|
||
return 1;
|
||
}
|