mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
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
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* Round float to integer away from zero.
|
|
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.
|
|
|
|
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/>. */
|
|
|
|
#define NO_MATH_REDIRECT
|
|
#include <math.h>
|
|
|
|
#include <math_private.h>
|
|
#include <libm-alias-float.h>
|
|
#include <math-use-builtins.h>
|
|
|
|
|
|
float
|
|
__roundf (float x)
|
|
{
|
|
#if USE_ROUNDF_BUILTIN
|
|
return __builtin_roundf (x);
|
|
#else
|
|
/* Use generic implementation. */
|
|
int32_t i0, j0;
|
|
|
|
GET_FLOAT_WORD (i0, x);
|
|
j0 = ((i0 >> 23) & 0xff) - 0x7f;
|
|
if (j0 < 23)
|
|
{
|
|
if (j0 < 0)
|
|
{
|
|
i0 &= 0x80000000;
|
|
if (j0 == -1)
|
|
i0 |= 0x3f800000;
|
|
}
|
|
else
|
|
{
|
|
uint32_t i = 0x007fffff >> j0;
|
|
if ((i0 & i) == 0)
|
|
/* X is integral. */
|
|
return x;
|
|
|
|
i0 += 0x00400000 >> j0;
|
|
i0 &= ~i;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (j0 == 0x80)
|
|
/* Inf or NaN. */
|
|
return x + x;
|
|
else
|
|
return x;
|
|
}
|
|
|
|
SET_FLOAT_WORD (x, i0);
|
|
return x;
|
|
#endif /* ! USE_ROUNDF_BUILTIN */
|
|
}
|
|
libm_alias_float (__round, round)
|