address uint(-1) failure case

closes #48
Uniswap · Jan 21, 2020 · d1c8612ea3f44eb770012028b174cb63efe4046f · d1c8612 · MicahZoltu · Jan 22, 2020
1 parent f04890e
commit d1c8612ea3f44eb770012028b174cb63efe4046f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/contracts/libraries/Math.sol b/contracts/libraries/Math.sol
@@ -7,7 +7,7 @@ library Math {
 
     function sqrt(uint y) internal pure returns (uint z) {
         if (y > 3) {
-            uint x = (y + 1) / 2;
+            uint x = y / 2 + 1;
             z = y;
             while (x < z) {
                 z = x;