-# rint.m4 serial 1
-dnl Copyright (C) 2011 Free Software Foundation, Inc.
+# rint.m4 serial 4
+dnl Copyright (C) 2011-2014 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_RINT],
[
+ AC_REQUIRE([gl_MATH_H_DEFAULTS])
+
dnl Determine RINT_LIBM.
- gl_MATHFUNC([rint], [double], [(double)])
+ dnl The reason for the extra code is:
+ dnl In AIX 7.1 with gcc 4.2, when optimization is turned on, calls to
+ dnl rint() with simple arguments are turned into rintf() calls by the
+ dnl compiler. But while rint() is resides in libc, rintf() is in libm.
+ gl_MATHFUNC([rint], [double], [(double)], [], [y += rint (2.0);])
if test $gl_cv_func_rint_no_libm = no \
&& test $gl_cv_func_rint_in_libm = no; then
HAVE_RINT=0