/* Test of splitting a double into fraction and mantissa.
- Copyright (C) 2007 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 "signature.h"
+SIGNATURE_CHECK (frexp, double, (double, int *));
+
#include <float.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "isnan.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
+
+#include "isnand-nolibm.h"
+#include "nan.h"
+#include "macros.h"
+
+/* Avoid some warnings from "gcc -Wshadow".
+ This file doesn't use the exp() function. */
+#undef exp
+#define exp exponent
+
+/* 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;
static double
my_ldexp (double x, int d)
{ /* NaN. */
int exp = -9999;
double mantissa;
- x = NaN ();
+ x = NaNd ();
mantissa = frexp (x, &exp);
- ASSERT (isnan (mantissa));
+ ASSERT (isnand (mantissa));
}
{ /* Positive infinity. */
{ /* Negative zero. */
int exp = -9999;
double mantissa;
- x = -0.0;
+ x = -zero;
mantissa = frexp (x, &exp);
ASSERT (exp == 0);
ASSERT (mantissa == x);