/* Test of signbit() substitute.
- Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <math.h>
+/* signbit must be a macro. */
+#ifndef signbit
+# error missing declaration
+#endif
+
#include <float.h>
#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+
+#include "macros.h"
float zerof = 0.0f;
double zerod = 0.0;
So we use -zerod instead. */
/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
- So we use minus_zerol instead. */
-long double minus_zerol = -LDBL_MIN * LDBL_MIN;
+ So we use minus_zerol instead.
+ IRIX cc can't put -0.0L into .data, but can compute at runtime.
+ Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
+ platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
+#if defined __hpux || defined __sgi
+static long double
+compute_minus_zerol (void)
+{
+ return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
+#else
+long double minus_zerol = -0.0L;
+#endif
static void
test_signbitf ()