From 03884fdbcc8783b29f96dabb59f9f781f53012ef Mon Sep 17 00:00:00 2001
From: Josh Stone <cuviper@gmail.com>
Date: Fri, 25 Mar 2016 17:02:31 -0700
Subject: [PATCH] bigint: reapply #176

---
 bigint/src/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bigint/src/lib.rs b/bigint/src/lib.rs
index dcd8aca..5257e3a 100644
--- a/bigint/src/lib.rs
+++ b/bigint/src/lib.rs
@@ -2884,6 +2884,11 @@ impl BigInt {
         str::from_utf8(buf).ok().and_then(|s| BigInt::from_str_radix(s, radix).ok())
     }
 
+    /// Determines the fewest bits necessary to express the `BigInt`,
+    /// not including the sign.
+    pub fn bits(&self) -> usize {
+        self.data.bits()
+    }
 
     /// Converts this `BigInt` into a `BigUint`, if it's not negative.
     #[inline]