mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
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
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/* Handle floating-point rounding mode within libc.
|
|
Copyright (C) 2012-2019 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/>. */
|
|
|
|
#ifndef _ROUNDING_MODE_H
|
|
#define _ROUNDING_MODE_H 1
|
|
|
|
#include <fenv.h>
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
|
|
/* Get the architecture-specific definition of how to determine the
|
|
rounding mode in libc. This header must also define the FE_*
|
|
macros for any standard rounding modes the architecture does not
|
|
have in <fenv.h>, to arbitrary distinct values. */
|
|
#include <get-rounding-mode.h>
|
|
|
|
/* Return true if a number should be rounded away from zero in
|
|
rounding mode MODE, false otherwise. NEGATIVE is true if the
|
|
number is negative, false otherwise. LAST_DIGIT_ODD is true if the
|
|
last digit of the truncated value (last bit for binary) is odd,
|
|
false otherwise. HALF_BIT is true if the number is at least half
|
|
way from the truncated value to the next value with the
|
|
least-significant digit in the same place, false otherwise.
|
|
MORE_BITS is true if the number is not exactly equal to the
|
|
truncated value or the half-way value, false otherwise. */
|
|
|
|
static bool
|
|
round_away (bool negative, bool last_digit_odd, bool half_bit, bool more_bits,
|
|
int mode)
|
|
{
|
|
switch (mode)
|
|
{
|
|
case FE_DOWNWARD:
|
|
return negative && (half_bit || more_bits);
|
|
|
|
case FE_TONEAREST:
|
|
return half_bit && (last_digit_odd || more_bits);
|
|
|
|
case FE_TOWARDZERO:
|
|
return false;
|
|
|
|
case FE_UPWARD:
|
|
return !negative && (half_bit || more_bits);
|
|
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
#endif /* rounding-mode.h */
|