Imported gcc-4.4.3

[msp430-gcc.git] / gcc / config / h8300 / ctzhi2.c

diff --git a/gcc/config/h8300/ctzhi2.c b/gcc/config/h8300/ctzhi2.c
new file mode 100644 (file)
index 0000000..ba6f8e9
--- /dev/null
+++ b/gcc/config/h8300/ctzhi2.c
@@ -0,0 +1,35 @@
+/* The implementation of __ctzhi2.
+   Copyright (C) 2003, 2009  Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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, or (at your option)
+any later version.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+int __ctzhi2 (unsigned short x);
+
+int
+__ctzhi2 (unsigned short x)
+{
+  int i;
+  for (i = 0; i < 16; i++)
+    if (x & ((unsigned short) 1 << i))
+      break;
+  return i;
+}