-# frexpl.m4 serial 16
+# frexpl.m4 serial 18
dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_DEFUN([gl_FUNC_FREXPL],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
+ AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
dnl 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>])
+ AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
FREXPL_LIBM=
if test $HAVE_DECL_FREXPL = 1; then
gl_CHECK_FREXPL_NO_LIBM
LIBS="$save_LIBS"
case "$gl_cv_func_frexpl_works" in
*yes) gl_func_frexpl=yes ;;
- *) gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
+ *) gl_func_frexpl=no; REPLACE_FREXPL=1 ;;
esac
else
gl_func_frexpl=no
[Define if the frexpl() function is available.])
fi
fi
+ if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then
+ dnl Find libraries needed to link lib/frexpl.c.
+ if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
+ AC_REQUIRE([gl_FUNC_FREXP])
+ FREXPL_LIBM="$FREXP_LIBM"
+ else
+ FREXPL_LIBM=
+ fi
+ fi
AC_SUBST([FREXPL_LIBM])
])
AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
+ AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
dnl 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>])
+ AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
if test $HAVE_DECL_FREXPL = 1; then
gl_CHECK_FREXPL_NO_LIBM
if test $gl_cv_func_frexpl_no_libm = yes; then