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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
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* Round to integer type. ldbl-128 version.
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Copyright (C) 2016-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <errno.h>
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#include <fenv.h>
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#include <math.h>
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#include <math_private.h>
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#include <libm-alias-ldouble.h>
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#include <stdbool.h>
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#include <stdint.h>
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#define BIAS 0x3fff
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#define MANT_DIG 113
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#if UNSIGNED
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# define RET_TYPE uintmax_t
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#else
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# define RET_TYPE intmax_t
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#endif
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#include <fromfp.h>
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RET_TYPE
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FUNC (_Float128 x, int round, unsigned int width)
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{
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if (width > INTMAX_WIDTH)
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width = INTMAX_WIDTH;
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uint64_t hx, lx;
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GET_LDOUBLE_WORDS64 (hx, lx, x);
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bool negative = (hx & 0x8000000000000000ULL) != 0;
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if (width == 0)
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return fromfp_domain_error (negative, width);
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hx &= 0x7fffffffffffffffULL;
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if ((hx | lx) == 0)
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return 0;
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int exponent = hx >> (MANT_DIG - 1 - 64);
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exponent -= BIAS;
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int max_exponent = fromfp_max_exponent (negative, width);
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if (exponent > max_exponent)
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return fromfp_domain_error (negative, width);
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hx &= ((1ULL << (MANT_DIG - 1 - 64)) - 1);
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hx |= 1ULL << (MANT_DIG - 1 - 64);
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uintmax_t uret;
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bool half_bit, more_bits;
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/* The exponent is at most 63, so we are shifting right by at least
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49 bits. */
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if (exponent >= -1)
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{
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int shift = MANT_DIG - 1 - exponent;
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if (shift <= 64)
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{
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uint64_t h = 1ULL << (shift - 1);
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half_bit = (lx & h) != 0;
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more_bits = (lx & (h - 1)) != 0;
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uret = hx << (64 - shift);
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if (shift != 64)
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uret |= lx >> shift;
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}
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else
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{
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uint64_t h = 1ULL << (shift - 1 - 64);
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half_bit = (hx & h) != 0;
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more_bits = ((hx & (h - 1)) | lx) != 0;
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uret = hx >> (shift - 64);
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}
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}
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else
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{
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uret = 0;
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half_bit = false;
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more_bits = true;
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}
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return fromfp_round_and_return (negative, uret, half_bit, more_bits, round,
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exponent, max_exponent, width);
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}
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