mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/* Double-precision math error handling.
|
|
Copyright (C) 2018-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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-barriers.h>
|
|
#include "math_config.h"
|
|
|
|
#if WANT_ERRNO
|
|
#include <errno.h>
|
|
/* NOINLINE reduces code size and avoids making math functions non-leaf
|
|
when the error handling is inlined. */
|
|
NOINLINE static double
|
|
with_errno (double y, int e)
|
|
{
|
|
errno = e;
|
|
return y;
|
|
}
|
|
#else
|
|
#define with_errno(x, e) (x)
|
|
#endif
|
|
|
|
/* NOINLINE reduces code size. */
|
|
NOINLINE static double
|
|
xflow (uint32_t sign, double y)
|
|
{
|
|
y = math_opt_barrier (sign ? -y : y) * y;
|
|
return with_errno (y, ERANGE);
|
|
}
|
|
|
|
attribute_hidden double
|
|
__math_uflow (uint32_t sign)
|
|
{
|
|
return xflow (sign, 0x1p-767);
|
|
}
|
|
|
|
#if WANT_ERRNO_UFLOW
|
|
/* Underflows to zero in some non-nearest rounding mode, setting errno
|
|
is valid even if the result is non-zero, but in the subnormal range. */
|
|
attribute_hidden double
|
|
__math_may_uflow (uint32_t sign)
|
|
{
|
|
return xflow (sign, 0x1.8p-538);
|
|
}
|
|
#endif
|
|
|
|
attribute_hidden double
|
|
__math_oflow (uint32_t sign)
|
|
{
|
|
return xflow (sign, 0x1p769);
|
|
}
|
|
|
|
attribute_hidden double
|
|
__math_divzero (uint32_t sign)
|
|
{
|
|
double y = math_opt_barrier (sign ? -1.0 : 1.0) / 0.0;
|
|
return with_errno (y, ERANGE);
|
|
}
|
|
|
|
attribute_hidden double
|
|
__math_invalid (double x)
|
|
{
|
|
double y = (x - x) / (x - x);
|
|
return isnan (x) ? y : with_errno (y, EDOM);
|
|
}
|
|
|
|
/* Check result and set errno if necessary. */
|
|
|
|
attribute_hidden double
|
|
__math_check_uflow (double y)
|
|
{
|
|
return y == 0.0 ? with_errno (y, ERANGE) : y;
|
|
}
|
|
|
|
attribute_hidden double
|
|
__math_check_oflow (double y)
|
|
{
|
|
return isinf (y) ? with_errno (y, ERANGE) : y;
|
|
}
|