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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
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/* Set NaN payload. dbl-64 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 <math.h>
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#include <math_private.h>
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#include <libm-alias-double.h>
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#include <nan-high-order-bit.h>
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#include <stdint.h>
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#define SET_HIGH_BIT (HIGH_ORDER_BIT_IS_SET_FOR_SNAN ? SIG : !SIG)
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#define BIAS 0x3ff
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#define PAYLOAD_DIG 51
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#define EXPLICIT_MANT_DIG 52
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int
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FUNC (double *x, double payload)
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{
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uint32_t hx, lx;
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EXTRACT_WORDS (hx, lx, payload);
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int exponent = hx >> (EXPLICIT_MANT_DIG - 32);
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/* Test if argument is (a) negative or too large; (b) too small,
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except for 0 when allowed; (c) not an integer. */
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if (exponent >= BIAS + PAYLOAD_DIG
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|| (exponent < BIAS && !(SET_HIGH_BIT && hx == 0 && lx == 0)))
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{
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INSERT_WORDS (*x, 0, 0);
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return 1;
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}
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int shift = BIAS + EXPLICIT_MANT_DIG - exponent;
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if (shift < 32
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? (lx & ((1U << shift) - 1)) != 0
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: (lx != 0 || (hx & ((1U << (shift - 32)) - 1)) != 0))
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{
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INSERT_WORDS (*x, 0, 0);
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return 1;
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}
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if (exponent != 0)
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{
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hx &= (1U << (EXPLICIT_MANT_DIG - 32)) - 1;
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hx |= 1U << (EXPLICIT_MANT_DIG - 32);
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if (shift >= 32)
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{
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lx = hx >> (shift - 32);
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hx = 0;
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}
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else if (shift != 0)
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{
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lx = (lx >> shift) | (hx << (32 - shift));
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hx >>= shift;
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}
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}
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hx |= 0x7ff00000 | (SET_HIGH_BIT ? 0x80000 : 0);
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INSERT_WORDS (*x, hx, lx);
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return 0;
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}
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