1 files changed, 3 insertions, 7 deletions
diff --git a/calc.go b/calc.go
index 67794aa..1e0e598 100644
--- a/calc.go
+++ b/calc.go
@@ -61,17 +61,13 @@ func (c *Calculator) negate() {
 	}
 }
 
-// performOp performs the specified arithmetic operation.
-func (c *Calculator) performOperation(operator byte) {
-	fn, err := parseOperator(operator)
-	if err != nil {
-		return
-	}
+// operate performs a binary arithmetic operation on the stored values.
+func (c *Calculator) operate(op Op) {
 	lhs, rhs, err := c.operands()
 	if err != nil {
 		return
 	}
-	c.stack.push(fn(lhs, rhs))
+	c.stack.push(op(lhs, rhs))
 	c.buf = ""
 }