mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
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
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
|
|
|
|
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 <math.h>
|
|
#include <math_private.h>
|
|
#include <math-svid-compat.h>
|
|
#include <libm-alias-float.h>
|
|
|
|
|
|
#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
|
|
/* wrapper powf */
|
|
float
|
|
__powf_compat (float x, float y)
|
|
{
|
|
float z = __ieee754_powf (x, y);
|
|
if (__glibc_unlikely (!isfinite (z)))
|
|
{
|
|
if (_LIB_VERSION != _IEEE_)
|
|
{
|
|
if (isfinite (x) && isfinite (y))
|
|
{
|
|
if (isnan (z))
|
|
/* pow neg**non-int */
|
|
return __kernel_standard_f (x, y, 124);
|
|
else if (x == 0.0f && y < 0.0f)
|
|
{
|
|
if (signbit (x) && signbit (z))
|
|
/* pow(-0.0,negative) */
|
|
return __kernel_standard_f (x, y, 123);
|
|
else
|
|
/* pow(+0.0,negative) */
|
|
return __kernel_standard_f (x, y, 143);
|
|
}
|
|
else
|
|
/* pow overflow */
|
|
return __kernel_standard_f (x, y, 121);
|
|
}
|
|
}
|
|
}
|
|
else if (__builtin_expect (z == 0.0f, 0)
|
|
&& isfinite (x) && x != 0 && isfinite (y)
|
|
&& _LIB_VERSION != _IEEE_)
|
|
/* pow underflow */
|
|
return __kernel_standard_f (x, y, 122);
|
|
|
|
return z;
|
|
}
|
|
compat_symbol (libm, __powf_compat, powf, GLIBC_2_0);
|
|
#endif
|