diff --git a/src/array.rs b/src/array.rs
index 3848c77..aa3b7ae 100644
--- a/src/array.rs
+++ b/src/array.rs
@@ -21,14 +21,20 @@ pub trait Index : PartialEq + Copy {
 }
 
 impl Index for u8 {
+    #[inline(always)]
     fn zero() -> Self { 0 }
+    #[inline(always)]
     fn to_usize(self) -> usize { self as usize }
+    #[inline(always)]
     fn from(ix: usize) ->  Self { ix as u8 }
 }
 
 impl Index for u16 {
+    #[inline(always)]
     fn zero() -> Self { 0 }
+    #[inline(always)]
     fn to_usize(self) -> usize { self as usize }
+    #[inline(always)]
     fn from(ix: usize) ->  Self { ix as u16 }
 }