side-step potentially panic'ing negate in fn abs.

2015-04-15 12:27:23 +02:00 · 2015-04-15 12:27:23 +02:00 · e9f892acc4
commit e9f892acc4
parent c34fa8b2c5
1 changed files with 5 additions and 1 deletions
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@ -1321,7 +1321,11 @@ pub fn pow(self, mut exp: u32) -> $T {
        #[stable(feature = "rust1", since = "1.0.0")]
        #[inline]
        pub fn abs(self) -> $T {
-            if self.is_negative() { -self } else { self }
+            if self.is_negative() {
+                self.wrapping_neg()
+            } else {
+                self
+            }
        }

        /// Returns a number representing sign of `self`.