diff --git a/src/cgmath/lib.rs b/src/cgmath/lib.rs
index 9533599..59f3cff 100644
--- a/src/cgmath/lib.rs
+++ b/src/cgmath/lib.rs
@@ -41,14 +41,4 @@ pub mod cylinder;
 pub mod obb;
 pub mod sphere;
 
-pub mod util {
-    use std::num::one;
-
-    // These functions are horrific! We really need better from-int support
-    // in std::num.
-
-    #[inline]
-    pub fn two<T: Num>() -> T { one::<T>() + one::<T>() }
-    #[inline]
-    pub fn half<T: Real>() -> T { one::<T>() / two::<T>() }
-}
+pub mod util;
diff --git a/src/cgmath/util.rs b/src/cgmath/util.rs
new file mode 100644
index 0000000..2e85022
--- /dev/null
+++ b/src/cgmath/util.rs
@@ -0,0 +1,24 @@
+// Copyright 2013 The CGMath Developers. For a full listing of the authors,
+// refer to the AUTHORS file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::num::one;
+
+// These functions are horrific! We really need better from-int support
+// in std::num.
+
+#[inline]
+pub fn two<T: Num>() -> T { one::<T>() + one::<T>() }
+#[inline]
+pub fn half<T: Real>() -> T { one::<T>() / two::<T>() }