From 4f853c738dcae9d2433d03137bea04740ee3c15b Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Mon, 25 Jan 2010 02:21:20 +0100
Subject: [PATCH] Tests for module 'tan'.

---
 ChangeLog         |  4 ++++
 modules/tan-tests | 13 +++++++++++++
 tests/test-tan.c  | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+)
 create mode 100644 modules/tan-tests
 create mode 100644 tests/test-tan.c

diff --git a/ChangeLog b/ChangeLog
index bf3d4327a..2b4e2ace6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2010-01-24  Bruno Haible  <bruno@clisp.org>
 
+	Tests for module 'tan'.
+	* modules/tan-tests: New file.
+	* tests/test-tan.c: New file.
+
 	Tests for module 'sqrt'.
 	* modules/sqrt-tests: New file.
 	* tests/test-sqrt.c: New file.
diff --git a/modules/tan-tests b/modules/tan-tests
new file mode 100644
index 000000000..178a64399
--- /dev/null
+++ b/modules/tan-tests
@@ -0,0 +1,13 @@
+Files:
+tests/test-tan.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-tan
+check_PROGRAMS += test-tan
+test_tan_LDADD = $(LDADD) @TAN_LIBM@
diff --git a/tests/test-tan.c b/tests/test-tan.c
new file mode 100644
index 000000000..32b3bdaac
--- /dev/null
+++ b/tests/test-tan.c
@@ -0,0 +1,40 @@
+/* Test of tan() function.
+   Copyright (C) 2010 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 (tan, double, (double));
+
+#include "macros.h"
+
+volatile double x;
+double y;
+
+int
+main ()
+{
+  /* A particular value.  */
+  x = 0.6;
+  y = tan (x);
+  ASSERT (y >= 0.6841368083 && y <= 0.6841368084);
+
+  return 0;
+}
-- 
2.11.0