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emacs/m4/c-strtod.m4
Paul Eggert f64898abf4 Merge from gnulib for 'inline'.
2012-11-29 snippet/warn-on-use: no 'static inline'
2012-11-29 ftruncate, fts, lstat, openat, raise: no 'static inline'
2012-11-29 arctwo, md4, md5, sha1, sha256, sha512: no 'static inline'
2012-11-29 fflush, stat: no 'static inline'
2012-11-29 stdio: better 'inline'
2012-11-29 sys_stat: no 'static inline'
2012-11-29 unistd: better 'inline'
2012-11-29 c-strtod, memcoll, readutmp: no 'static inline'
2012-11-29 extern-inline: no 'static inline'
2012-11-29 sys_socket: better 'inline'
* lib/stdio.c, lib/unistd.c: New files, from gnulib.
* build-aux/snippet/warn-on-use.h, lib/gnulib.mk, lib/lstat.c:
* lib/md5.c, lib/sha1.c, lib/sha256.c, lib/sha512.c, lib/stat.c:
* lib/stdio.in.h, lib/sys_stat.in.h, lib/unistd.in.h, m4/c-strtod.m4:
* m4/extern-inline.m4, m4/gnulib-comp.m4, m4/lstat.m4, m4/md5.m4:
* m4/sha1.m4, m4/sha256.m4, m4/sha512.m4, m4/stat.m4, m4/stdio_h.m4:
* m4/sys_socket_h.m4, m4/sys_stat_h.m4, m4/unistd_h.m4:
Update from gnulib.

Fixes: debbugs:13040
2012-11-30 10:25:59 -08:00

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1.6 KiB
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# c-strtod.m4 serial 15
# Copyright (C) 2004-2006, 2009-2012 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# Written by Paul Eggert.
AC_DEFUN([gl_C99_STRTOLD],
[
AC_CACHE_CHECK([whether strtold conforms to C99],
[gl_cv_func_c99_strtold],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[/* On HP-UX before 11.23, strtold returns a struct instead of
long double. Reject implementations like that, by requiring
compatibility with the C99 prototype. */
#include <stdlib.h>
static long double (*p) (char const *, char **) = strtold;
static long double
test (char const *nptr, char **endptr)
{
long double r;
r = strtold (nptr, endptr);
return r;
}]],
[[return test ("1.0", NULL) != 1 || p ("1.0", NULL) != 1;]])],
[gl_cv_func_c99_strtold=yes],
[gl_cv_func_c99_strtold=no])])
if test $gl_cv_func_c99_strtold = yes; then
AC_DEFINE([HAVE_C99_STRTOLD], [1], [Define to 1 if strtold conforms to C99.])
fi
])
dnl Prerequisites of lib/c-strtod.c.
AC_DEFUN([gl_C_STRTOD],
[
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_CHECK_FUNCS([strtod_l])
])
dnl Prerequisites of lib/c-strtold.c.
AC_DEFUN([gl_C_STRTOLD],
[
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_REQUIRE([gl_C99_STRTOLD])
AC_CHECK_FUNCS([strtold_l])
])