2012-02-29 Bruno Haible <bruno@clisp.org>
+ Tests for module 'hypotf'.
+ * modules/hypotf-tests: New file.
+ * tests/test-hypotf.c: New file.
+
New module 'hypotf'.
* lib/math.in.h (hypotf): New declaration.
* lib/hypotf.c: New file.
--- /dev/null
+/* Test of hypotf() function.
+ Copyright (C) 2010-2012 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (hypotf, float, (float, float));
+
+#include <float.h>
+
+#include "macros.h"
+
+volatile float x;
+volatile float y;
+float z;
+
+int
+main ()
+{
+ /* A particular value. */
+ x = 0.4f;
+ y = 0.6f;
+ z = hypot (x, y);
+ ASSERT (z >= 0.7211102f && z <= 0.7211103f);
+
+ /* Overflow. */
+ x = FLT_MAX;
+ y = FLT_MAX * 0.5f;
+ z = hypotf (x, y);
+ ASSERT (z == HUGE_VALF);
+
+ /* No underflow. */
+ x = FLT_MIN;
+ y = 0.0f;
+ z = hypotf (x, y);
+ ASSERT (z == FLT_MIN);
+
+ /* No underflow. */
+ x = FLT_MIN * 2.0f;
+ y = FLT_MIN * 3.0f;
+ z = hypotf (x, y);
+ ASSERT (z >= FLT_MIN * 2.0f && z <= FLT_MIN * 4.0f);
+
+ return 0;
+}