1 files changed, 51 insertions, 0 deletions
diff --git a/math/test-powl.c b/math/test-powl.c
new file mode 100644
index 0000000000..960f2167ca
--- /dev/null
+++ b/math/test-powl.c
@@ -0,0 +1,51 @@
+/* Test for powl
+   Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stdio.h>
+#include <math.h>
+#include <float.h>
+#include <ieee754.h>
+
+int
+main (void)
+{
+  int result = 0;
+
+#ifndef NO_LONG_DOUBLE
+# if LDBL_MANT_DIG == 64
+    {
+      long double x = 1e-20;
+      union ieee854_long_double u;
+      u.ieee.mantissa0 = 1;
+      u.ieee.mantissa1 = 1;
+      u.ieee.exponent = 0;
+      u.ieee.negative = 0;
+      (void) powl (0.2, u.d);
+      x = powl (x, 1.5);
+      if (fabsl (x - 1e-30) > 1e-10) 
+	{
+	  printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x);
+	  result = 1;
+	}
+    }
+# endif
+#endif
+
+  return result;
+}