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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
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* Raise given exceptions.
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Copyright (C) 1997-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Huggins-Daines <dhd@debian.org>
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <float.h>
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#include <math.h>
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/* Please see section 10,
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page 10-5 "Delayed Trapping" in the PA-RISC 2.0 Architecture manual */
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int
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__feraiseexcept (int excepts)
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{
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/* Raise exceptions represented by EXCEPTS. But we must raise only one
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signal at a time. It is important that if the overflow/underflow
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exception and the divide by zero exception are given at the same
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time, the overflow/underflow exception follows the divide by zero
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exception. */
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/* We do these bits in assembly to be certain GCC doesn't optimize
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away something important, and so we can force delayed traps to
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occur. */
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/* We use "fldd 0(%%sr0,%%sp),%0" to flush the delayed exception */
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/* First: Invalid exception. */
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if (excepts & FE_INVALID)
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{
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/* One example of an invalid operation is 0 * Infinity. */
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double d = HUGE_VAL;
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__asm__ __volatile__ (
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" fcpy,dbl %%fr0,%%fr22\n"
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" fmpy,dbl %0,%%fr22,%0\n"
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" fldd 0(%%sr0,%%sp),%0"
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: "+f" (d) : : "%fr22" );
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}
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/* Second: Division by zero. */
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if (excepts & FE_DIVBYZERO)
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{
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double d = 1.0;
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__asm__ __volatile__ (
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" fcpy,dbl %%fr0,%%fr22\n"
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" fdiv,dbl %0,%%fr22,%0\n"
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" fldd 0(%%sr0,%%sp),%0"
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: "+f" (d) : : "%fr22" );
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}
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/* Third: Overflow. */
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if (excepts & FE_OVERFLOW)
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{
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double d = DBL_MAX;
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__asm__ __volatile__ (
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" fadd,dbl %0,%0,%0\n"
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" fldd 0(%%sr0,%%sp),%0"
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: "+f" (d) );
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}
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/* Fourth: Underflow. */
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if (excepts & FE_UNDERFLOW)
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{
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double d = DBL_MIN;
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double e = 3.0;
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__asm__ __volatile__ (
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" fdiv,dbl %0,%1,%0\n"
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" fldd 0(%%sr0,%%sp),%0"
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: "+f" (d) : "f" (e) );
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}
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/* Fifth: Inexact */
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if (excepts & FE_INEXACT)
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{
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double d = M_PI;
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double e = 69.69;
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__asm__ __volatile__ (
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" fdiv,dbl %0,%1,%%fr22\n"
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" fcnvfxt,dbl,sgl %%fr22,%%fr22L\n"
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" fldd 0(%%sr0,%%sp),%%fr22"
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: : "f" (d), "f" (e) : "%fr22" );
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}
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/* Success. */
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return 0;
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}
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libm_hidden_def (__feraiseexcept)
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weak_alias (__feraiseexcept, feraiseexcept)
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libm_hidden_weak (feraiseexcept)
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