diff --git a/src/MathHelper.sol b/src/MathHelper.sol
index f8d3ec2..7de0dde 100644
--- a/src/MathHelper.sol
+++ b/src/MathHelper.sol
@@ -5,8 +5,8 @@ abstract contract MathHelper {
     function min(uint256 a, uint256 b) internal pure returns (uint256) {
         return a < b ? a : b;
     }
-    
-      // Forked from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v5.0.0/contracts/utils/math/SignedMath.sol
+
+    // Forked from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v5.0.0/contracts/utils/math/SignedMath.sol
     function max(int256 a, int256 b) internal pure returns (int256) {
         return a > b ? a : b;
     }
@@ -15,4 +15,16 @@ abstract contract MathHelper {
     function abs(int128 n) internal pure returns (int128) {
         return n >= 0 ? n : -n;
     }
+
+    function abs(int256 n) internal pure returns (uint256) {
+        return n >= 0 ? uint256(n) : uint256(-n);
+    }
+
+    function diff(int256 a, int256 b) internal pure returns (uint256) {
+        return a >= b ? uint256(a - b) : uint256(b - a);
+    }
+
+    function diff(uint256 a, uint256 b) internal pure returns (uint256) {
+        return a >= b ? a - b : b - a;
+    }
 }