From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 7 Dec 2025 20:10:31 +0100
Subject: Add build system scaffolding and libc headers

---
 lib/libc/strings/ffsl.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 lib/libc/strings/ffsl.c

(limited to 'lib/libc/strings/ffsl.c')

diff --git a/lib/libc/strings/ffsl.c b/lib/libc/strings/ffsl.c
new file mode 100644
index 00000000..2f2e7d44
--- /dev/null
+++ b/lib/libc/strings/ffsl.c
@@ -0,0 +1,14 @@
+int ffsl(long i)
+{
+	if (i == 0)
+		return 0;
+
+	int pos = 1;
+	unsigned long u = (unsigned long)i;
+
+	while ((u & 1UL) == 0UL) {
+		u >>= 1;
+		pos++;
+	}
+	return pos;
+}
-- 
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