X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=tests%2Ftest-math.c;h=f940a2499ccf23f8bbcb72aa94fd78b875c7be0d;hb=32fa5a49695a1e738873537bc5db98be2d83d4a8;hp=56cf058c48e75f3ab7101b883dfcc4915f08381a;hpb=0a56509612c0b43a3f05361ecfb73b8b39f8e66c;p=gnulib.git

diff --git a/tests/test-math.c b/tests/test-math.c
index 56cf058c4..f940a2499 100644
--- a/tests/test-math.c
+++ b/tests/test-math.c
@@ -1,5 +1,5 @@
 /* Test of <math.h> 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
@@ -30,9 +30,24 @@ choke me
 static float n = NAN;
 #endif
 
+/* Compare two numbers with ==.
+   This is a separate function because IRIX 6.5 "cc -O" miscompiles an
+   'x == x' test.  */
+static int
+numeric_equal (double x, double y)
+{
+  return x == y;
+}
+
 int
-main ()
+main (void)
 {
   double d = NAN;
-  return d == d;
+  double zero = 0.0;
+  if (numeric_equal (d, d))
+    return 1;
+  d = HUGE_VAL;
+  if (!numeric_equal (d, 1.0 / zero))
+    return 1;
+  return 0;
 }