/* Test for finite value (zero, subnormal, or normal, and not infinite or NaN).
- Copyright (C) 2007-2008 Free Software Foundation, Inc.
+ Copyright (C) 2007-2013 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
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. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
/* Written by Ben Pfaff <blp@gnu.org>, 2007. */
#include "isnand-nolibm.h"
#include "isnanl-nolibm.h"
+/* The "cc" compiler on HP-UX 11.11, when optimizing, simplifies the test
+ x - y == 0.0 to x == y, a simplification which is invalid when x and y
+ are Infinity. Disable this optimization. */
+#if defined __hpux && !defined __GNUC__
+static float zerof;
+static double zerod;
+static long double zerol;
+#else
+# define zerof 0.f
+# define zerod 0.
+# define zerol 0.L
+#endif
+
int gl_isfinitef (float x)
{
- return !isnanf (x) && x - x == 0.f;
+ return !isnanf (x) && x - x == zerof;
}
int gl_isfinited (double x)
{
- return !isnand (x) && x - x == 0.;
+ return !isnand (x) && x - x == zerod;
}
int gl_isfinitel (long double x)
{
- return !isnanl (x) && x - x == 0.L;
+ return !isnanl (x) && x - x == zerol;
}