/* Test of isnand() substitute.
- Copyright (C) 2007-2008 Free Software Foundation, Inc.
+ Copyright (C) 2007-2010 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>
+/* isnan must be a macro. */
+#ifndef isnan
+# error missing declaration
+#endif
+
#include <float.h>
#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
#include "nan.h"
-
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+#include "macros.h"
/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
So we use -zero instead. */
So we use -zero instead. */
double zerod = 0.0;
-/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L.
- So we use -zero instead. */
-long double zerol = 0.0L;
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+ 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_float (void)
ASSERT (!isnan (-2.718e30L));
ASSERT (!isnan (-2.718e-30L));
ASSERT (!isnan (0.0L));
- ASSERT (!isnan (-zerol));
+ ASSERT (!isnan (minus_zerol));
/* Infinite values. */
ASSERT (!isnan (1.0L / 0.0L));
ASSERT (!isnan (-1.0L / 0.0L));
/* Quiet NaN. */
- ASSERT (isnan (0.0L / 0.0L));
+ ASSERT (isnan (NaNl ()));
#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
/* A bit pattern that is different from a Quiet NaN. With a bit of luck,
it's a Signalling NaN. */
{
memory_long_double m;
- m.value = 0.0L / 0.0L;
+ m.value = NaNl ();
# if LDBL_EXPBIT0_BIT > 0
m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1);
# else