Tests for module 'log2f-ieee'.

* modules/log2f-ieee-tests: New file.
* tests/test-log2f-ieee.c: New file.
* tests/test-log2-ieee.h: New file.

2 files changed, 85 insertions, 0 deletions

diff --git a/tests/test-log2-ieee.h b/tests/test-log2-ieee.h
new file mode 100644
index 0000000000..bb0a0016ad
--- /dev/null
+++ b/tests/test-log2-ieee.h
@@ -0,0 +1,40 @@
+/* Test of log2*() function family.
+   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/>.  */
+
+static void
+test_function (void)
+{
+  /* [MX] shaded specification in POSIX.  */
+
+  /* Negative arguments.  */
+  ASSERT (ISNAN (LOG2 (- L_(0.00001))));
+  ASSERT (ISNAN (LOG2 (- L_(1.0))));
+  ASSERT (ISNAN (LOG2 (- L_(1000000.0))));
+  ASSERT (ISNAN (LOG2 (- INFINITY)));
+
+  /* NaN.  */
+  ASSERT (ISNAN (LOG2 (NAN)));
+
+  /* Only rational value.  */
+  {
+    DOUBLE z = LOG2 (L_(1.0));
+    ASSERT (z == L_(0.0));
+    ASSERT (!signbit (z));
+  }
+
+  /* Infinity.  */
+  ASSERT (LOG2 (INFINITY) == INFINITY);
+}
diff --git a/tests/test-log2f-ieee.c b/tests/test-log2f-ieee.c
new file mode 100644
index 0000000000..bcc724a29e
--- /dev/null
+++ b/tests/test-log2f-ieee.c
@@ -0,0 +1,45 @@
+/* Test of log2f() function.
+   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"
+
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE float
+#define ISNAN isnanf
+#define INFINITY Infinityf ()
+#define NAN NaNf ()
+#define L_(literal) literal##f
+#define MINUS_ZERO minus_zerof
+#define LOG2 log2f
+#include "test-log2-ieee.h"
+
+int
+main ()
+{
+  test_function ();
+
+  return 0;
+}