implement ffsl and ffsll functions

per the resolution of Austin Group issue #617, these are accepted for
XSI option in POSIX future and thus I'm treating them as standard
functions.

2 files changed, 14 insertions, 0 deletions

diff --git a/src/misc/ffsl.c b/src/misc/ffsl.c
new file mode 100644
index 00000000..0105c66a
--- /dev/null
+++ b/src/misc/ffsl.c
@@ -0,0 +1,7 @@
+#include <strings.h>
+#include "atomic.h"
+
+int ffsl(long i)
+{
+	return i ? a_ctz_l(i)+1 : 0;
+}
diff --git a/src/misc/ffsll.c b/src/misc/ffsll.c
new file mode 100644
index 00000000..0c5ced82
--- /dev/null
+++ b/src/misc/ffsll.c
@@ -0,0 +1,7 @@
+#include <strings.h>
+#include "atomic.h"
+
+int ffsll(long long i)
+{
+	return i ? a_ctz_64(i)+1 : 0;
+}