diff --git a/src/ts/process/infunctions.ts b/src/ts/process/infunctions.ts
index 90c3bb75..c8ea1a9a 100644
--- a/src/ts/process/infunctions.ts
+++ b/src/ts/process/infunctions.ts
@@ -9,6 +9,8 @@ function toRPN(expression:string) {
         '/': {precedence: 3, associativity: 'Left'},
         '^': {precedence: 4, associativity: 'Left'},
         '%': {precedence: 3, associativity: 'Left'},
+        '<': {precedence: 1, associativity: 'Left'},
+        '>': {precedence: 1, associativity: 'Left'},
     };
 
     expression = expression.replace(/\s+/g, '');
@@ -52,6 +54,8 @@ function calculateRPN(expression:string) {
                 case '/': stack.push(a / b); break;
                 case '^': stack.push(a ** b); break;
                 case '%': stack.push(a % b); break;
+                case '<': stack.push(a < b ? 1 : 0); break;
+                case '>': stack.push(a > b ? 1 : 0); break;
             }
         }
     });