/* Test of signbit() substitute.
- Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2007-2011 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 "minus-zero.h"
+#include "macros.h"
float zerof = 0.0f;
double zerod = 0.0;
long double zerol = 0.0L;
-/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
- So we use -zerof instead. */
-
-/* HP cc on HP-UX 10.20 has a bug with the constant expression -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.
- 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 ()
{
ASSERT (signbit (-2.718e-30f));
/* Zeros. */
ASSERT (!signbit (0.0f));
- if (1.0f / -zerof < 0)
- ASSERT (signbit (-zerof));
+ if (1.0f / minus_zerof < 0)
+ ASSERT (signbit (minus_zerof));
else
- ASSERT (!signbit (-zerof));
+ ASSERT (!signbit (minus_zerof));
/* Infinite values. */
ASSERT (!signbit (1.0f / 0.0f));
ASSERT (signbit (-1.0f / 0.0f));
ASSERT (signbit (-2.718e-30));
/* Zeros. */
ASSERT (!signbit (0.0));
- if (1.0 / -zerod < 0)
- ASSERT (signbit (-zerod));
+ if (1.0 / minus_zerod < 0)
+ ASSERT (signbit (minus_zerod));
else
- ASSERT (!signbit (-zerod));
+ ASSERT (!signbit (minus_zerod));
/* Infinite values. */
ASSERT (!signbit (1.0 / 0.0));
ASSERT (signbit (-1.0 / 0.0));