/* Test of rounding towards zero.
- 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>
-#include <stdio.h>
-#include <stdlib.h>
+#include "signature.h"
+SIGNATURE_CHECK (trunc, double, (double));
-#include "isnand.h"
+#include "isnand-nolibm.h"
+#include "nan.h"
+#include "macros.h"
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- abort (); \
- } \
- } \
- while (0)
-
-/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */
-#ifdef __DECC
-static double
-NaN ()
-{
- static double zero = 0.0;
- return zero / zero;
-}
-#else
-# define NaN() (0.0 / 0.0)
-#endif
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+ So we use -zero instead. */
+double zero = 0.0;
int
main ()
{
/* Zero. */
ASSERT (trunc (0.0) == 0.0);
- ASSERT (trunc (-0.0) == 0.0);
+ ASSERT (trunc (-zero) == 0.0);
/* Positive numbers. */
ASSERT (trunc (0.3) == 0.0);
ASSERT (trunc (0.7) == 0.0);
ASSERT (trunc (1.0 / 0.0) == 1.0 / 0.0);
ASSERT (trunc (-1.0 / 0.0) == -1.0 / 0.0);
/* NaNs. */
- ASSERT (isnand (trunc (NaN ())));
+ ASSERT (isnand (trunc (NaNd ())));
return 0;
}