3 dnl Copyright (C) 2011-2024 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 AC_DEFUN([gl_FUNC_POWF],
10 AC_REQUIRE([gl_MATH_H_DEFAULTS])
11 AC_REQUIRE([gl_FUNC_POW])
13 dnl Persuade glibc <math.h> to declare powf().
14 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
16 dnl Test whether powf() exists. Assume that powf(), if it exists, is
17 dnl defined in the same library as pow().
19 LIBS="$LIBS $POW_LIBM"
20 AC_CHECK_FUNCS([powf])
22 if test $ac_cv_func_powf = yes; then