/*
 * @Author: NorthCity1984
 * @LastEditTime: 2022-04-03 09:31:39
 * @Description:
 * @Website: https://grimoire.cn
 * Copyright (c) NorthCity1984 All rights reserved.
 */
package main

import (
	"fmt"
	"math"
)

func main() {
	// ans := math.Exp2(0)
	ans := math.Sqrt(-8)
	// ans2 := math1.Sqrt(-8)
	fmt.Println(ans)
	// fmt.Println(ans2)
}