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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
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* mpn_submul_1 -- multiply the S1_SIZE long limb vector pointed to by S1_PTR
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by S2_LIMB, subtract the S1_SIZE least significant limbs of the product
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from the limb vector pointed to by RES_PTR. Return the most significant
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limb of the product, adjusted for carry-out from the subtraction.
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Copyright (C) 1992-2019 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 "longlong.h"
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mp_limb_t
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mpn_submul_1 (register mp_ptr res_ptr, register mp_srcptr s1_ptr,
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mp_size_t s1_size, register mp_limb_t s2_limb)
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{
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register mp_limb_t cy_limb;
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register mp_size_t j;
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register mp_limb_t prod_high, prod_low;
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register mp_limb_t x;
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/* The loop counter and index J goes from -SIZE to -1. This way
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the loop becomes faster. */
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j = -s1_size;
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/* Offset the base pointers to compensate for the negative indices. */
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res_ptr -= j;
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s1_ptr -= j;
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cy_limb = 0;
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do
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{
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umul_ppmm (prod_high, prod_low, s1_ptr[j], s2_limb);
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prod_low += cy_limb;
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cy_limb = (prod_low < cy_limb) + prod_high;
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x = res_ptr[j];
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prod_low = x - prod_low;
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cy_limb += (prod_low > x);
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res_ptr[j] = prod_low;
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}
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while (++j != 0);
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return cy_limb;
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}
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