2 dnl Copyright (C) 2011 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_FREXPF],
9 AC_REQUIRE([gl_MATH_H_DEFAULTS])
10 AC_REQUIRE([gl_FUNC_FREXP])
12 dnl Test whether frexpf() exists. We cannot assume that frexpf(), if it
13 dnl exists, is defined in the same library as frexp(). This is not the case
14 dnl on NetBSD, OpenBSD.
15 gl_MATHFUNC([frexpf], [float], [(float, int *)])
16 if test $gl_cv_func_frexpf_no_libm = no \
17 && test $gl_cv_func_frexpf_in_libm = no; then
19 FREXPF_LIBM="$FREXP_LIBM"
21 AC_SUBST([FREXPF_LIBM])