X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-signbit.c;h=9581190cc67a09a6b55b9fdcd18b8cc568d8cd04;hb=e2843e30e8c2885eb8cbc77e20c4e0f4d562d44d;hp=94cab376721c68bfe087e4b064e29c76df47532c;hpb=ea0f5bf6444c14f97c069b5da723781ecb8a84aa;p=gnulib.git

diff --git a/tests/test-signbit.c b/tests/test-signbit.c
index 94cab3767..9581190cc 100644
--- a/tests/test-signbit.c
+++ b/tests/test-signbit.c
@@ -1,5 +1,5 @@
 /* Test of signbit() substitute.
-   Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008, 2009, 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
@@ -20,22 +20,15 @@
 
 #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 "macros.h"
 
 float zerof = 0.0f;
 double zerod = 0.0;
@@ -48,8 +41,20 @@ long double zerol = 0.0L;
    So we use -zerod instead.  */
 
 /* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
-   So we use minus_zerol instead.  */
-long double minus_zerol = -LDBL_MIN * LDBL_MIN;
+   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 ()