Mercurial > gnulib
view m4/coshf.m4 @ 40201:24f6637d57d0
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author | Karl Berry <karl@freefriends.org> |
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date | Sun, 24 Feb 2019 08:05:56 -0800 |
parents | b06060465f09 |
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# coshf.m4 serial 3 dnl Copyright (C) 2011-2019 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. AC_DEFUN([gl_FUNC_COSHF], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_FUNC_COSH]) dnl Persuade glibc <math.h> to declare coshf(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Test whether coshf() exists. Assume that coshf(), if it exists, is dnl defined in the same library as cosh(). save_LIBS="$LIBS" LIBS="$LIBS $COSH_LIBM" AC_CHECK_FUNCS([coshf]) LIBS="$save_LIBS" if test $ac_cv_func_coshf = yes; then COSHF_LIBM="$COSH_LIBM" else HAVE_COSHF=0 dnl If the function is declared but does not appear to exist, it may be dnl defined as an inline function. In order to avoid a conflict, we have dnl to define rpl_coshf, not coshf. AC_CHECK_DECLS([coshf], [REPLACE_COSHF=1], , [[#include <math.h>]]) COSHF_LIBM="$COSH_LIBM" fi AC_SUBST([COSHF_LIBM]) ])