GoLang – Find Square Root – Sqrt() Function – Examples & Explanation

The syntax of Sqrt() function in Go Language is:

func Sqrt(x float64) float64

Note: float64 is a data type in Go language which has IEEE-754 64-bit floating-point numbers.
Special cases are:
Sqrt(+Inf) = +Inf
Sqrt(±0) = ±0
Sqrt(x < 0) = NaN
Sqrt(NaN) = NaN

x – where x is any Valid float64 Input value. This parameter is required.

If the x parameter is not a number (numeric value) Sqrt() function returns an error .
If there is no argument (x – input value) passes to the function, then the compiler will produce an error.

Sqrt() function will return the square root of the given input(x – parameter).

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Sqrt(-2.4)
	fmt.Println(x)
}

Output:
NaN

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Sqrt(5.4)
	fmt.Println(x)
}

Output:
2.32379000772445

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Sqrt(4)
	fmt.Println(x)
}

Output:
2