X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-frexp.c;h=0cd08230bed925c422f12704c8b0848b306ffcc8;hb=80b8978ab152f43a94ac95c89c15b847a3ad2850;hp=9856ba0416174f4afc6afbe355ae915c9e999e06;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/tests/test-frexp.c b/tests/test-frexp.c
index 9856ba041..0cd08230b 100644
--- a/tests/test-frexp.c
+++ b/tests/test-frexp.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2008 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
@@ -24,7 +24,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "isnan.h"
+#include "isnand-nolibm.h"
+#include "nan.h"
+
+/* Avoid some warnings from "gcc -Wshadow".
+   This file doesn't use the exp() function.  */
+#undef exp
+#define exp exponent
 
 #define ASSERT(expr) \
   do									     \
@@ -32,22 +38,15 @@
       if (!(expr))							     \
         {								     \
           fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+          fflush (stderr);						     \
           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;
 
 static double
 my_ldexp (double x, int d)
@@ -73,9 +72,9 @@ main ()
   { /* NaN.  */
     int exp = -9999;
     double mantissa;
-    x = NaN ();
+    x = NaNd ();
     mantissa = frexp (x, &exp);
-    ASSERT (isnan (mantissa));
+    ASSERT (isnand (mantissa));
   }
 
   { /* Positive infinity.  */
@@ -107,7 +106,7 @@ main ()
   { /* Negative zero.  */
     int exp = -9999;
     double mantissa;
-    x = -0.0;
+    x = -zero;
     mantissa = frexp (x, &exp);
     ASSERT (exp == 0);
     ASSERT (mantissa == x);