2012-02-26 Bruno Haible <bruno@clisp.org>
+ Tests for module 'frexpf-ieee'.
+ * modules/frexpf-ieee-tests: New file.
+ * tests/test-frexpf-ieee.c: New file.
+
New module 'frexpf-ieee'.
* modules/frexpf-ieee: New file.
--- /dev/null
+/* Test of splitting a double into fraction and mantissa.
+ Copyright (C) 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/>. */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "isnanf-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+ /* [MX] shaded specification in POSIX. */
+
+ /* NaN. */
+ {
+ int exp = -9999;
+ float mantissa;
+ mantissa = frexpf (NaNf (), &exp);
+ ASSERT (isnanf (mantissa));
+ }
+
+ /* Signed zero. */
+ {
+ int exp = -9999;
+ float mantissa;
+ mantissa = frexpf (0.0f, &exp);
+ ASSERT (mantissa == 0.0f);
+ ASSERT (!signbit (mantissa));
+ ASSERT (exp == 0);
+ }
+ {
+ int exp = -9999;
+ float mantissa;
+ mantissa = frexpf (minus_zerof, &exp);
+ ASSERT (mantissa == 0.0f);
+ ASSERT (!!signbit (mantissa) == !!signbit (minus_zerof));
+ ASSERT (exp == 0);
+ }
+
+ /* Infinity. */
+ {
+ int exp = -9999;
+ float mantissa;
+ mantissa = frexpf (Infinityf (), &exp);
+ ASSERT (mantissa == Infinityf ());
+ }
+
+ return 0;
+}