added Pow method

math.go

@@ -0,0 +1,7 @@
+package gmath
+
+import "math"
+
+func Pow[N Number](x, y N) N {
+	return N(math.Pow(float64(x), float64(y)))
+}

number.go

@@ -1,5 +1,9 @@
 package gmath
 
 type Number interface {
-	~int | ~int8 | ~int16 | ~int32 | ~int64 | ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~float32 | ~float64
+	Integer | ~float32 | ~float64
+}
+
+type Integer interface {
+	~int | ~int8 | ~int16 | ~int32 | ~int64 | ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64
 }