mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 07:10:06 +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
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/* Raise given exceptions.
|
|
Copyright (C) 2000-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and
|
|
Martin Schwidefsky (schwidefsky@de.ibm.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 <fenv_libc.h>
|
|
#include <float.h>
|
|
#include <math.h>
|
|
|
|
|
|
static __inline__ void
|
|
fexceptdiv (float d, float e)
|
|
{
|
|
__asm__ __volatile__ ("debr %0,%1" : : "f" (d), "f" (e) );
|
|
}
|
|
|
|
static __inline__ void
|
|
fexceptadd (float d, float e)
|
|
{
|
|
__asm__ __volatile__ ("aebr %0,%1" : : "f" (d), "f" (e) );
|
|
}
|
|
|
|
#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
|
|
static __inline__ void
|
|
fexceptround (double e)
|
|
{
|
|
float d;
|
|
/* Load rounded from double to float with M3 = round toward 0, M4 = Suppress
|
|
IEEE-inexact exception.
|
|
In case of e=0x1p128 and the overflow-mask bit is zero, only the
|
|
IEEE-overflow flag is set. If overflow-mask bit is one, DXC field is set to
|
|
0x20 "IEEE overflow, exact".
|
|
In case of e=0x1p-150 and the underflow-mask bit is zero, only the
|
|
IEEE-underflow flag is set. If underflow-mask bit is one, DXC field is set
|
|
to 0x10 "IEEE underflow, exact".
|
|
This instruction is available with a zarch machine >= z196. */
|
|
__asm__ __volatile__ ("ledbra %0,5,%1,4" : "=f" (d) : "f" (e) );
|
|
}
|
|
#endif
|
|
|
|
int
|
|
__feraiseexcept (int excepts)
|
|
{
|
|
/* Raise exceptions represented by EXPECTS. But we must raise only
|
|
one signal at a time. It is important that if the overflow/underflow
|
|
exception and the inexact exception are given at the same time,
|
|
the overflow/underflow exception follows the inexact exception. */
|
|
|
|
/* First: invalid exception. */
|
|
if (FE_INVALID & excepts)
|
|
fexceptdiv (0.0, 0.0);
|
|
|
|
/* Next: division by zero. */
|
|
if (FE_DIVBYZERO & excepts)
|
|
fexceptdiv (1.0, 0.0);
|
|
|
|
/* Next: overflow. */
|
|
if (FE_OVERFLOW & excepts)
|
|
{
|
|
#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
|
|
fexceptround (0x1p128);
|
|
#else
|
|
/* If overflow-mask bit is zero, both IEEE-overflow and IEEE-inexact flags
|
|
are set. If overflow-mask bit is one, DXC field is set to 0x2C "IEEE
|
|
overflow, inexact and incremented". */
|
|
fexceptadd (FLT_MAX, 1.0e32);
|
|
#endif
|
|
}
|
|
|
|
/* Next: underflow. */
|
|
if (FE_UNDERFLOW & excepts)
|
|
{
|
|
#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
|
|
fexceptround (0x1p-150);
|
|
#else
|
|
/* If underflow-mask bit is zero, both IEEE-underflow and IEEE-inexact
|
|
flags are set. If underflow-mask bit is one, DXC field is set to 0x1C
|
|
"IEEE underflow, inexact and incremented". */
|
|
fexceptdiv (FLT_MIN, 3.0);
|
|
#endif
|
|
}
|
|
|
|
/* Last: inexact. */
|
|
if (FE_INEXACT & excepts)
|
|
fexceptdiv (2.0, 3.0);
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|
|
libm_hidden_def (__feraiseexcept)
|
|
weak_alias (__feraiseexcept, feraiseexcept)
|
|
libm_hidden_weak (feraiseexcept)
|