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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
111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/* Changes for 128-bit long double are
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Copyright (C) 2001 Stephen L. Moshier <moshier@na-net.ornl.gov>
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and are incorporated herein by permission of the author. The author
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reserves the right to distribute this material elsewhere under different
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copying permissions. These modifications are distributed here under
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the following terms:
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This 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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This 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 this library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* __ieee754_coshl(x)
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* Method :
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* mathematically coshl(x) if defined to be (exp(x)+exp(-x))/2
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* 1. Replace x by |x| (coshl(x) = coshl(-x)).
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* 2.
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* [ exp(x) - 1 ]^2
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* 0 <= x <= ln2/2 : coshl(x) := 1 + -------------------
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* 2*exp(x)
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*
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* exp(x) + 1/exp(x)
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* ln2/2 <= x <= 22 : coshl(x) := -------------------
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* 2
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* 22 <= x <= lnovft : coshl(x) := expl(x)/2
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* lnovft <= x <= ln2ovft: coshl(x) := expl(x/2)/2 * expl(x/2)
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* ln2ovft < x : coshl(x) := huge*huge (overflow)
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*
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* Special cases:
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* coshl(x) is |x| if x is +INF, -INF, or NaN.
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* only coshl(0)=1 is exact for finite x.
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*/
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#include <math.h>
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#include <math_private.h>
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static const _Float128 one = 1.0, half = 0.5, huge = L(1.0e4900),
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ovf_thresh = L(1.1357216553474703894801348310092223067821E4);
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_Float128
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__ieee754_coshl (_Float128 x)
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{
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_Float128 t, w;
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int32_t ex;
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ieee854_long_double_shape_type u;
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u.value = x;
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ex = u.parts32.w0 & 0x7fffffff;
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/* Absolute value of x. */
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u.parts32.w0 = ex;
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/* x is INF or NaN */
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if (ex >= 0x7fff0000)
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return x * x;
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/* |x| in [0,0.5*ln2], return 1+expm1l(|x|)^2/(2*expl(|x|)) */
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if (ex < 0x3ffd62e4) /* 0.3465728759765625 */
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{
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if (ex < 0x3fb80000) /* |x| < 2^-116 */
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return one; /* cosh(tiny) = 1 */
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t = __expm1l (u.value);
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w = one + t;
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return one + (t * t) / (w + w);
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}
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/* |x| in [0.5*ln2,40], return (exp(|x|)+1/exp(|x|)/2; */
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if (ex < 0x40044000)
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{
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t = __ieee754_expl (u.value);
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return half * t + half / t;
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}
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/* |x| in [22, ln(maxdouble)] return half*exp(|x|) */
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if (ex <= 0x400c62e3) /* 11356.375 */
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return half * __ieee754_expl (u.value);
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/* |x| in [log(maxdouble), overflowthresold] */
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if (u.value <= ovf_thresh)
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{
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w = __ieee754_expl (half * u.value);
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t = half * w;
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return t * w;
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}
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/* |x| > overflowthresold, cosh(x) overflow */
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return huge * huge;
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}
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strong_alias (__ieee754_coshl, __coshl_finite)
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