2012-02-25 Bruno Haible <bruno@clisp.org>
+ Tests for module 'fabsl'.
+ * modules/fabsl-tests: New file.
+ * tests/test-fabsl.c: New file.
+
New module 'fabsl'.
* lib/math.in.h (fabsl): New declaration.
* lib/fabsl.c: New file.
--- /dev/null
+/* Test of fabsl() 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>, 2010-2012. */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fabsl, long double, (long double));
+
+#include <string.h>
+
+#include "macros.h"
+#include "minus-zero.h"
+
+volatile long double x;
+long double y;
+long double zero = 0.0L;
+
+int
+main ()
+{
+ /* A particular positive value. */
+ x = 0.6L;
+ y = fabsl (x);
+ ASSERT (y == 0.6L);
+
+ /* A particular negative value. */
+ x = -0.6L;
+ y = fabsl (x);
+ ASSERT (y == 0.6L);
+
+ /* Signed zero. */
+ x = 0.0L;
+ y = fabsl (x);
+ ASSERT (y == 0.0L);
+ ASSERT (memcmp (&y, &zero, sizeof y) == 0);
+
+ x = minus_zerol;
+ y = fabsl (x);
+ ASSERT (y == 0.0L);
+ ASSERT (memcmp (&y, &zero, sizeof y) == 0);
+
+ return 0;
+}