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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
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/* mpn_rshift -- Shift right a low-level natural-number integer.
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <gmp.h>
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#include "gmp-impl.h"
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#include <assert.h>
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/* Shift U (pointed to by UP and USIZE limbs long) CNT bits to the right
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and store the USIZE least significant limbs of the result at WP.
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The bits shifted out to the right are returned.
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Argument constraints:
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1. 0 < CNT < BITS_PER_MP_LIMB
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2. If the result is to be written over the input, WP must be <= UP.
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*/
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mp_limb_t
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mpn_rshift (register mp_ptr wp,
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register mp_srcptr up, mp_size_t usize,
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register unsigned int cnt)
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{
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register mp_limb_t high_limb, low_limb;
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register unsigned sh_1, sh_2;
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register mp_size_t i;
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mp_limb_t retval;
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assert (usize != 0 && cnt != 0);
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sh_1 = cnt;
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#if 0
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if (sh_1 == 0)
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{
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if (wp != up)
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{
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/* Copy from low end to high end, to allow specified input/output
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overlapping. */
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for (i = 0; i < usize; i++)
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wp[i] = up[i];
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}
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return usize;
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}
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#endif
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wp -= 1;
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sh_2 = BITS_PER_MP_LIMB - sh_1;
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high_limb = up[0];
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retval = high_limb << sh_2;
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low_limb = high_limb;
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for (i = 1; i < usize; i++)
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{
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high_limb = up[i];
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wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
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low_limb = high_limb;
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}
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wp[i] = low_limb >> sh_1;
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return retval;
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}
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