1 files changed, 37 insertions, 0 deletions
diff --git a/tests/test-truncl-ieee.c b/tests/test-truncl-ieee.c
new file mode 100644
index 0000000000..de6c9adf0b
--- /dev/null
+++ b/tests/test-truncl-ieee.c
@@ -0,0 +1,37 @@
+/* Test of rounding towards zero.
+   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/>.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "fpucw.h"
+#include "minus-zero.h"
+#include "macros.h"
+
+int
+main ()
+{
+  DECL_LONG_DOUBLE_ROUNDING
+
+  BEGIN_LONG_DOUBLE_ROUNDING ();
+
+  /* Zero.  */
+  ASSERT (!signbit (truncl (0.0L)));
+  ASSERT (!!signbit (truncl (minus_zerol)) == !!signbit (minus_zerol));
+
+  return 0;
+}