Cleanup normalize()

Author: mattico

src/float/mod.rs

@@ -38,8 +38,8 @@ impl Float for f32 {
         unsafe { mem::transmute(a) }
     }
     fn normalize(significand: Self::Int) -> (Self::Int, Self::Int) {
-        let shift = Self::Int::leading_zeros(significand)
-            .wrapping_sub(Self::Int::leading_zeros(1 << Self::significand_bits()));
+        let shift = significand.leading_zeros()
+            .wrapping_sub((1u32 << Self::significand_bits()).leading_zeros());
         (1u32.wrapping_sub(shift as Self::Int), significand << shift as Self::Int)
     }
 }
@@ -58,8 +58,8 @@ impl Float for f64 {
         unsafe { mem::transmute(a) }
     }
     fn normalize(significand: Self::Int) -> (Self::Int, Self::Int) {
-        let shift = Self::Int::leading_zeros(significand) 
-            .wrapping_sub(Self::Int::leading_zeros(1 << Self::significand_bits()));
+        let shift = significand.leading_zeros()
+            .wrapping_sub((1u64 << Self::significand_bits()).leading_zeros());
         (1u64.wrapping_sub(shift as Self::Int), significand << shift as Self::Int)
     }
 }