Mercurial > gnulib
view m4/printf-frexpl.m4 @ 12559:c2cbabec01dd
update nearly all FSF copyright year lists to include 2010
Use the same procedure as for 2009, outlined in
http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20081
author | Jim Meyering <meyering@redhat.com> |
---|---|
date | Fri, 01 Jan 2010 10:31:12 +0100 |
parents | f6cba5a556ce |
children | b9e80fe39af5 |
line wrap: on
line source
# printf-frexpl.m4 serial 6 dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check how to define printf_frexpl() without linking with libm. AC_DEFUN([gl_FUNC_PRINTF_FREXPL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) dnl Subset of gl_FUNC_FREXPL_NO_LIBM. AC_CACHE_CHECK([whether frexpl can be used without linking with libm], [gl_cv_func_frexpl_no_libm], [ AC_TRY_LINK([#include <math.h> long double x; int y;], [return frexpl (x, &y) < 1;], [gl_cv_func_frexpl_no_libm=yes], [gl_cv_func_frexpl_no_libm=no]) ]) if test $gl_cv_func_frexpl_no_libm = yes; then gl_FUNC_FREXPL_WORKS case "$gl_cv_func_frexpl_works" in *yes) gl_func_frexpl_no_libm=yes ;; *) gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;; esac else gl_func_frexpl_no_libm=no dnl Set REPLACE_FREXPL here because the system may have frexpl in libm. REPLACE_FREXPL=1 fi if test $gl_func_frexpl_no_libm = yes; then AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1], [Define if the frexpl function is available in libc.]) dnl Also check whether it's declared. dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>. AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>]) fi AC_CACHE_CHECK([whether ldexpl can be used without linking with libm], [gl_cv_func_ldexpl_no_libm], [ AC_TRY_LINK([#include <math.h> long double x; int y;], [return ldexpl (x, y) < 1;], [gl_cv_func_ldexpl_no_libm=yes], [gl_cv_func_ldexpl_no_libm=no]) ]) if test $gl_cv_func_ldexpl_no_libm = yes; then gl_FUNC_LDEXPL_WORKS case "$gl_cv_func_ldexpl_works" in *yes) AC_DEFINE([HAVE_LDEXPL_IN_LIBC], [1], [Define if the ldexpl function is available in libc.]) dnl Also check whether it's declared. dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>. AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>]) ;; esac fi ])