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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
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/* Implementation of cbrtl. IBM Extended Precision version.
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Cephes Math Library Release 2.2: January, 1991
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Copyright 1984, 1991 by Stephen L. Moshier
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Adapted for glibc October, 2001.
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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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/* This file was copied from sysdeps/ieee754/ldbl-128/e_j0l.c. */
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#include <math_ldbl_opt.h>
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#include <math.h>
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#include <math_private.h>
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static const long double CBRT2 = 1.259921049894873164767210607278228350570251L;
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static const long double CBRT4 = 1.587401051968199474751705639272308260391493L;
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static const long double CBRT2I = 0.7937005259840997373758528196361541301957467L;
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static const long double CBRT4I = 0.6299605249474365823836053036391141752851257L;
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long double
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__cbrtl (long double x)
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{
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int e, rem, sign;
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long double z;
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if (!isfinite (x))
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return x + x;
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if (x == 0)
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return (x);
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if (x > 0)
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sign = 1;
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else
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{
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sign = -1;
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x = -x;
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}
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z = x;
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/* extract power of 2, leaving mantissa between 0.5 and 1 */
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x = __frexpl (x, &e);
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/* Approximate cube root of number between .5 and 1,
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peak relative error = 1.2e-6 */
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x = ((((1.3584464340920900529734e-1L * x
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- 6.3986917220457538402318e-1L) * x
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+ 1.2875551670318751538055e0L) * x
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- 1.4897083391357284957891e0L) * x
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+ 1.3304961236013647092521e0L) * x + 3.7568280825958912391243e-1L;
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/* exponent divided by 3 */
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if (e >= 0)
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{
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rem = e;
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e /= 3;
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rem -= 3 * e;
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if (rem == 1)
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x *= CBRT2;
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else if (rem == 2)
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x *= CBRT4;
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}
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else
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{ /* argument less than 1 */
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e = -e;
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rem = e;
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e /= 3;
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rem -= 3 * e;
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if (rem == 1)
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x *= CBRT2I;
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else if (rem == 2)
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x *= CBRT4I;
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e = -e;
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}
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/* multiply by power of 2 */
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x = __ldexpl (x, e);
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/* Newton iteration */
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x -= (x - (z / (x * x))) * 0.3333333333333333333333333333333333333333L;
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x -= (x - (z / (x * x))) * 0.3333333333333333333333333333333333333333L;
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x -= (x - (z / (x * x))) * 0.3333333333333333333333333333333333333333L;
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if (sign < 0)
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x = -x;
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return (x);
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}
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long_double_symbol (libm, __cbrtl, cbrtl);
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