Overview

math package of GO provides a Round method that can be used to round a number. It returns the nearest integer value.

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

func Round(x float64) float64

Some special cases of Round function are

• Round(±0) = ±0
• Round(±Inf) = ±Inf
• Round(NaN) = NaN

Code:

package main
import (
"fmt"
"math"
)
func main() {
res := math.Round(1.6)
fmt.Println(res)
res = math.Round(1.5)
fmt.Println(res)
res = math.Round(1.4)
fmt.Println(res)
res = math.Round(-1.6)
fmt.Println(res)
res = math.Round(-1.5)
fmt.Println(res)
res = math.Round(-1.4)
fmt.Println(res)
res = math.Round(1)
fmt.Println(res)
}

Output:

2
2
1
-2
-2
-1
1