Add ffsl(), ffsll(), fls(), flsl(), flsll()

Use compiler builtin for ffs().  Remove duplicate implementation from
Cygwin.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

1 files changed, 2 insertions, 12 deletions

diff --git a/newlib/libc/misc/ffs.c b/newlib/libc/misc/ffs.c
index 7fc38c8d8..ba5700920 100644
--- a/newlib/libc/misc/ffs.c
+++ b/newlib/libc/misc/ffs.c
@@ -29,18 +29,8 @@ No supporting OS subroutines are required.  */
 #include <strings.h>
 
 int
-_DEFUN(ffs, (word),
-       int word)
+ffs(int i)
 {
-  int i;
 
-  if (!word)
-    return 0;
-
-  i = 0;
-  for (;;)
-    {
-      if (((1 << i++) & word) != 0)
-	return i;
-    }
+	return (__builtin_ffs(i));
 }