1 files changed, 10 insertions, 0 deletions
diff --git a/src/iter.rs b/src/iter.rs
new file mode 100644
index 0000000..f8aa6cb
--- /dev/null
+++ b/src/iter.rs
@@ -0,0 +1,10 @@
+use num::BigInt;
+
+pub fn next(v: &BigInt) -> BigInt
+{
+    /*let t: BigUint = v | (v - 1);
+    (t + 1) | (((!t & -!t) - 1) >> (v.trailing_zeros() + 1))*/
+
+    let t: BigInt = (v | (v - 1u32)) + 1u32;
+    &t | ((((&t & -&t) / (v & -v)) >> 1) - 1u32)
+}