1 files changed, 21 insertions, 0 deletions
diff --git a/security/nss/cmd/lib/ffs.c b/security/nss/cmd/lib/ffs.c
new file mode 100644
index 0000000000..d1cbf67e28
--- /dev/null
+++ b/security/nss/cmd/lib/ffs.c
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#if !defined(XP_UNIX) && !defined(XP_OS2)
+
+int
+ffs(unsigned int i)
+{
+    int rv = 1;
+
+    if (!i)
+        return 0;
+
+    while (!(i & 1)) {
+        i >>= 1;
+        ++rv;
+    }
+
+    return rv;
+}
+#endif