From 11c7ee06fa3e3116a094a3418631a27bc5e55939 Mon Sep 17 00:00:00 2001
From: Brendan Zabarauskas <bjzaba@yahoo.com.au>
Date: Sun, 28 Oct 2012 16:57:41 +1000
Subject: [PATCH] Implement Abs for i8 to i64

---
 src/math.rs | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/math.rs b/src/math.rs
index 902b272..9ace329 100644
--- a/src/math.rs
+++ b/src/math.rs
@@ -7,6 +7,43 @@ trait Abs {
     pure fn abs() -> self;
 }
 
+#[inline]
+pure fn abs<T: Abs>(x: T) -> T {
+    x.abs()
+}
+
+impl i8: Abs {
+    #[inline]
+    pure fn abs() -> i8 {
+        if self >= 0 { self }
+        else         {-self }
+    }
+}
+
+impl i16: Abs {
+    #[inline]
+    pure fn abs() -> i16 {
+        if self >= 0 { self }
+        else         {-self }
+    }
+}
+
+impl i32: Abs {
+    #[inline]
+    pure fn abs() -> i32 {
+        if self >= 0 { self }
+        else         {-self }
+    }
+}
+
+impl i64: Abs {
+    #[inline]
+    pure fn abs() -> i64 {
+        if self >= 0 { self }
+        else         {-self }
+    }
+}
+
 impl int: Abs {
     #[inline]
     pure fn abs() -> int {