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authorRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
committerRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
commit0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 (patch)
tree6eaef0d8a720fa3da580de87b647fff796fe80b3 /src/misc/ffs.c
downloadmusl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.gz
initial check-in, version 0.5.0v0.5.0
Diffstat (limited to 'src/misc/ffs.c')
-rw-r--r--src/misc/ffs.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/misc/ffs.c b/src/misc/ffs.c
new file mode 100644
index 00000000..2f7cb321
--- /dev/null
+++ b/src/misc/ffs.c
@@ -0,0 +1,9 @@
+#include <strings.h>
+
+int ffs(int i)
+{
+ unsigned int j = i;
+ for (i=1; j && !(j&1); j>>=1, i++);
+ if (j) return i;
+ return 0;
+}