From 30428ec88f66c3da56f4ad42368ea81da9aebd6a Mon Sep 17 00:00:00 2001
From: Matt Ickstadt <mattico8@gmail.com>
Date: Sat, 20 Aug 2016 22:30:02 -0500
Subject: [PATCH] Use mem::swap to swap variables

---
 library/compiler-builtins/src/float/add.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/library/compiler-builtins/src/float/add.rs b/library/compiler-builtins/src/float/add.rs
index 3fffac35d7b5..f36e0c1e3f54 100644
--- a/library/compiler-builtins/src/float/add.rs
+++ b/library/compiler-builtins/src/float/add.rs
@@ -74,9 +74,7 @@ macro_rules! add {
 
             // Swap a and b if necessary so that a has the larger absolute value.
             if b_abs > a_abs {
-                let temp = a_rep;
-                a_rep = b_rep;
-                b_rep = temp;
+                ::core::mem::swap(&mut a_rep, &mut b_rep);
             }
 
             // Extract the exponent and significand from the (possibly swapped) a and b.