exponentiation operator

2 files changed, 4 insertions, 1 deletions

diff --git a/calculator.go b/calculator.go
index d2371b7..fb1fc90 100644
--- a/calculator.go
+++ b/calculator.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"math"
 	"strconv"
 )
 
@@ -58,6 +59,8 @@ func parseOp(op byte) (func(lhs *float64, rhs float64), error) {
 				*lhs = float64(int64(*lhs) % int64(rhs))
 			}
 		}, nil
+	case '^':
+		return func(lhs *float64, rhs float64) { *lhs = math.Pow(*lhs, rhs) }, nil
 	}
 	return nil, OpError{op}
 }
diff --git a/ui.go b/ui.go
index 5996a9c..aedaa6c 100644
--- a/ui.go
+++ b/ui.go
@@ -37,7 +37,7 @@ func (ui UI) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		switch msg.String() {
 		case "ctrl+c", "Q":
 			return ui, tea.Quit
-		case "+", "-", "*", "/", "%":
+		case "+", "-", "*", "/", "%", "^":
 			if err := ui.calc.performOp(msg.String()[0]); err != nil {
 				panic(err)
 			}