1 files changed, 54 insertions, 0 deletions
diff --git a/string/test-ffs.c b/string/test-ffs.c
new file mode 100644
index 0000000000..bbe62786e0
--- /dev/null
+++ b/string/test-ffs.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+   Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+     On-Line Applications Research Corporation.
+
+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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int
+DEFUN(main, (argc, argv),
+      int argc AND char **argv)
+{
+  int failures = 0;
+  int i;
+  void try (int value, int expected)
+    {
+      if (ffs (value) != expected)
+	{
+	  fprintf (stderr, "%#x expected %d got %d\n",
+		   value, expected, ffs (value));
+	  ++failures;
+	}
+    }
+
+  try (0, 0);
+  for (i=0 ; i<32 ; i++)
+    try (1<<i, i+1);
+  try (0x80008000, 16);
+
+  if (failures)
+    printf ("Test FAILED!  %d failure%s.\n", failures, &"s"[failures == 1]);
+  else
+    puts ("Test succeeded.");
+
+  exit (failures);
+}