-# rintf.m4 serial 3
-dnl Copyright (C) 2011-2012 Free Software Foundation, Inc.
+# rintf.m4 serial 4
+dnl Copyright (C) 2011-2013 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_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl Determine RINTF_LIBM.
- gl_MATHFUNC([rintf], [float], [(float)])
- if test $gl_cv_func_rintf_no_libm = no \
- && test $gl_cv_func_rintf_in_libm = no; then
+ gl_MATHFUNC([rintf], [float], [(float)],
+ [extern
+ #ifdef __cplusplus
+ "C"
+ #endif
+ float rintf (float);
+ ])
+ if test $gl_cv_func_rintf_no_libm = yes \
+ || test $gl_cv_func_rintf_in_libm = yes; then
+ HAVE_RINTF=1
+ dnl Also check whether it's declared.
+ dnl IRIX 6.5 has rintf() in libm but doesn't declare it in <math.h>.
+ AC_CHECK_DECLS([rintf], , [HAVE_DECL_RINTF=0], [[#include <math.h>]])
+ else
HAVE_RINTF=0
+ HAVE_DECL_RINTF=0
RINTF_LIBM=
fi
AC_SUBST([RINTF_LIBM])