Overview

math package of GO provides a Sqrt method that can be used to get the cube root of that number.

Below is the signature of the function. It takes input a float and also returns a float.

func Sqrt(x float64) float64

Some special cases of Sqrt function are

• Sqrt(±0) = ±0
• Sqrt(±Inf) = ±Inf
• Sqrt(x < 0) = NaN
• Sqrt(NaN) = NaN

Code:

package main
import (
"fmt"
"math"
)
func main() {
//Square root of a integer
res := math.Sqrt(4)
fmt.Println(res)
//Square root of a integer
res = math.Sqrt(9)
fmt.Println(res)
//Square Root of a float
res = math.Sqrt(30.33)
fmt.Println(res)
//Square Root of a negative number
res = math.Sqrt(-9)
fmt.Println(res)
}

Output:

2
3
5.5072679252057455