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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
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Round double value to long int.
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Copyright (C) 1997-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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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 <fenv.h>
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#include <limits.h>
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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 <fix-fp-int-convert-overflow.h>
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long int
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__lround (double x)
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{
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int32_t j0;
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uint32_t i1, i0;
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long int result;
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int sign;
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EXTRACT_WORDS (i0, i1, x);
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j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
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sign = (i0 & 0x80000000) != 0 ? -1 : 1;
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i0 &= 0xfffff;
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i0 |= 0x100000;
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if (j0 < 20)
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{
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if (j0 < 0)
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return j0 < -1 ? 0 : sign;
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else
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{
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i0 += 0x80000 >> j0;
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result = i0 >> (20 - j0);
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}
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}
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else if (j0 < (int32_t) (8 * sizeof (long int)) - 1)
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{
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if (j0 >= 52)
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result = ((long int) i0 << (j0 - 20)) | ((long int) i1 << (j0 - 52));
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else
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{
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uint32_t j = i1 + (0x80000000 >> (j0 - 20));
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if (j < i1)
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++i0;
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if (j0 == 20)
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result = (long int) i0;
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else
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{
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result = ((long int) i0 << (j0 - 20)) | (j >> (52 - j0));
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#ifdef FE_INVALID
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if (sizeof (long int) == 4
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&& sign == 1
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&& result == LONG_MIN)
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/* Rounding brought the value out of range. */
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feraiseexcept (FE_INVALID);
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#endif
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}
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}
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}
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else
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{
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/* The number is too large. Unless it rounds to LONG_MIN,
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FE_INVALID must be raised and the return value is
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unspecified. */
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#ifdef FE_INVALID
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if (FIX_DBL_LONG_CONVERT_OVERFLOW
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&& !(sign == -1
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&& (sizeof (long int) == 4
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? x > (double) LONG_MIN - 0.5
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: x >= (double) LONG_MIN)))
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{
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feraiseexcept (FE_INVALID);
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return sign == 1 ? LONG_MAX : LONG_MIN;
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}
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else if (!FIX_DBL_LONG_CONVERT_OVERFLOW
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&& sizeof (long int) == 4
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&& x <= (double) LONG_MIN - 0.5)
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{
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/* If truncation produces LONG_MIN, the cast will not raise
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the exception, but may raise "inexact". */
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feraiseexcept (FE_INVALID);
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return LONG_MIN;
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}
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#endif
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return (long int) x;
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}
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return sign * result;
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}
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libm_alias_double (__lround, lround)
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