/* 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
choke me
#endif
+#if 0
+/* Check that NAN expands into a constant expression. */
+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;
}