/* Test of splitting a double into fraction and mantissa.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2011 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#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 "minus-zero.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
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 = minus_zerod;
mantissa = frexp (x, &exp);
ASSERT (exp == 0);
ASSERT (mantissa == x);