core: add abs to num.

acuros · Feb 13, 2013 · 73280b0 · 73280b0
1 parent 389125a
commit 73280b0
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/libcore/num/num.rs b/src/libcore/num/num.rs
@@ -39,6 +39,10 @@ pub trait One {
     static pure fn one() -> Self;
 }
 
+pub pure fn abs<T: cmp::Ord Num Zero>(v: T) -> T {
+    if v < Zero::zero() { v.neg() } else { v }
+}
+
 pub trait Round {
     pure fn round(&self, mode: RoundMode) -> Self;