2 dnl Copyright (C) 2011-2019 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_RINTF],
9 AC_REQUIRE([gl_MATH_H_DEFAULTS])
11 dnl Persuade glibc <math.h> to declare rintf().
12 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
14 dnl Determine RINTF_LIBM.
15 gl_MATHFUNC([rintf], [float], [(float)],
22 if test $gl_cv_func_rintf_no_libm = yes \
23 || test $gl_cv_func_rintf_in_libm = yes; then
25 dnl Also check whether it's declared.
26 dnl IRIX 6.5 has rintf() in libm but doesn't declare it in <math.h>.
27 AC_CHECK_DECLS([rintf], , [HAVE_DECL_RINTF=0], [[#include <math.h>]])
33 AC_SUBST([RINTF_LIBM])