Tests for module 'atan2f'.

* modules/atan2f-tests: New file.
* tests/test-atan2f.c: New file.

diff --git a/ChangeLog b/ChangeLog
index f8a5a73..b6578c9 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-10-08  Bruno Haible  <bruno@clisp.org>
 
+       Tests for module 'atan2f'.
+       * modules/atan2f-tests: New file.
+       * tests/test-atan2f.c: New file.
+
        New module 'atan2f'.
        * lib/math.in.h (atan2f): New declaration.
        * lib/atan2f.c: New file.

diff --git a/modules/atan2f-tests b/modules/atan2f-tests
new file mode 100644 (file)
index 0000000..6523e8b
--- /dev/null
+++ b/modules/atan2f-tests
@@ -0,0 +1,13 @@
+Files:
+tests/test-atan2f.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-atan2f
+check_PROGRAMS += test-atan2f
+test_atan2f_LDADD = $(LDADD) @ATAN2F_LIBM@

diff --git a/tests/test-atan2f.c b/tests/test-atan2f.c
new file mode 100644 (file)
index 0000000..bcc17c3
--- /dev/null
+++ b/tests/test-atan2f.c
@@ -0,0 +1,60 @@
+/* Test of atan2f() function.
+   Copyright (C) 2010-2011 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>, 2010-2011.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (atan2f, float, (float, float));
+
+#include "macros.h"
+
+volatile float x;
+volatile float y;
+float z;
+
+int
+main ()
+{
+  /* A particular value in the first quadrant.  */
+  x = 0.6f;
+  y = 0.8f;
+  z = atan2f (y, x);
+  ASSERT (z >= 0.92729515f && z <= 0.9272953f);
+
+  /* A particular value in the second quadrant.  */
+  x = -0.6f;
+  y = 0.8f;
+  z = atan2f (y, x);
+  ASSERT (z >= 2.2142974f && z <= 2.2142975f);
+
+  /* A particular value in the third quadrant.  */
+  x = -0.6f;
+  y = -0.8f;
+  z = atan2f (y, x);
+  ASSERT (z >= -2.2142975f && z <= -2.2142974f);
+
+  /* A particular value in the fourth quadrant.  */
+  x = 0.6f;
+  y = -0.8f;
+  z = atan2f (y, x);
+  ASSERT (z >= -0.9272953f && z <= -0.92729515f);
+
+  return 0;
+}