glibc/math/lgamma-compat.h
Paul Eggert 5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
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
2019-09-07 02:43:31 -07:00

76 lines
2.8 KiB
C

/* ABI compatibility for lgamma functions.
Copyright (C) 2015-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef LGAMMA_COMPAT_H
#define LGAMMA_COMPAT_H 1
#include <math-svid-compat.h>
#include <shlib-compat.h>
/* XSI POSIX requires lgamma to set signgam, but ISO C does not permit
this. Namespace issues can be avoided if the functions set
__signgam and signgam is a weak alias, but this only works if both
signgam and __signgam were exported from the glibc version the
program was linked against. Before glibc 2.23, lgamma functions
set signgam which was not a weak alias for __signgam, so old
binaries have dynamic symbols for signgam only and the versions of
lgamma used for old binaries must set both signgam and __signgam.
Those versions also do a check of _LIB_VERSION != _ISOC_ to match
old glibc.
Users of this file define USE_AS_COMPAT to 0 when building the main
version of lgamma, 1 when building the compatibility version. */
#define LGAMMA_OLD_VER GLIBC_2_0
#define LGAMMA_NEW_VER GLIBC_2_23
#define HAVE_LGAMMA_COMPAT SHLIB_COMPAT (libm, LGAMMA_OLD_VER, LGAMMA_NEW_VER)
/* Whether to build this version at all. */
#define BUILD_LGAMMA \
(LIBM_SVID_COMPAT && (HAVE_LGAMMA_COMPAT || !USE_AS_COMPAT))
/* The name to use for this version. */
#if USE_AS_COMPAT
# define LGFUNC(FUNC) FUNC ## _compat
#else
# define LGFUNC(FUNC) FUNC
#endif
/* If there is a compatibility version, gamma (not an ISO C function,
so never a problem for it to set signgam) points directly to it
rather than having separate versions. */
#define GAMMA_ALIAS (USE_AS_COMPAT ? HAVE_LGAMMA_COMPAT : !HAVE_LGAMMA_COMPAT)
/* How to call the underlying lgamma_r function. */
#define CALL_LGAMMA(TYPE, FUNC, ARG) \
({ \
TYPE lgamma_tmp; \
int local_signgam; \
if (USE_AS_COMPAT) \
{ \
lgamma_tmp = FUNC ((ARG), &local_signgam); \
if (_LIB_VERSION != _ISOC_) \
signgam = __signgam = local_signgam; \
} \
else \
lgamma_tmp = FUNC ((ARG), &__signgam); \
lgamma_tmp; \
})
#endif /* lgamma-compat.h. */