From d32039ef96cce6d2a5560a6a8ec805cf7c4bc4ae Mon Sep 17 00:00:00 2001
From: keosariel <keosariel@icloud.com>
Date: Fri, 29 Jul 2022 07:37:26 +0100
Subject: [PATCH] fix: :zap: modulus operator optimization

---
 src/math.sol | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/math.sol b/src/math.sol
index 5ea5761..03ffc38 100644
--- a/src/math.sol
+++ b/src/math.sol
@@ -75,12 +75,12 @@ contract DSMath {
     //    floor[(n-1) / 2] = floor[n / 2].
     //
     function rpow(uint x, uint n) internal pure returns (uint z) {
-        z = n % 2 != 0 ? x : RAY;
+        z = n & 1 != 0 ? x : RAY;
 
         for (n /= 2; n != 0; n /= 2) {
             x = rmul(x, x);
 
-            if (n % 2 != 0) {
+            if (n & 1 != 0) {
                 z = rmul(z, x);
             }
         }