math.Pow() Function in Golang With Examples

math.RoundToEven() Function in Golang With Examples

Last Updated : 13 Apr, 2020

Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You can round off the given number to the nearest even integer with the help of RoundToEven() function provided by the math package. So, you need to add a math package in your program with the help of the import keyword to access the RoundToEven() function.

Syntax:

func RoundToEven(a float64) float64

If you pass -Inf or +Inf in this function like RoundToEven(-Inf) or RoundToEven(+Inf), then this function will return -Inf or +Inf.
If you pass -0 or +0 in this function like RoundToEven(-0) or RoundToEven(+0), then this function will return -0 or +0.
If you pass NaN in this function like RoundToEven(NaN), then this function will return NaN.

Example 1:

// Golang program to illustrate how to round 
// off the given number to nearest even integer 
  
package main 
  
import ( 
    "fmt"
    "math"
) 
  
// Main function 
func main() { 
  
    // Using RoundToEven() function 
    res_1 := math.RoundToEven(45.98) 
    res_2 := math.RoundToEven(-119.98) 
    res_3 := math.RoundToEven(math.Inf(-1)) 
    res_4 := math.RoundToEven(math.NaN()) 
    res_5 := math.RoundToEven(math.Inf(1)) 
  
    // Displaying the result 
    fmt.Printf("Result 1: %.1f", res_1) 
    fmt.Printf("\nResult 2: %.1f", res_2) 
    fmt.Printf("\nResult 3: %.1f", res_3) 
    fmt.Printf("\nResult 4: %.1f", res_4) 
    fmt.Printf("\nResult 5: %.1f", res_5) 
  
} 

Output:

Result 1: 46.0
Result 2: -120.0
Result 3: -Inf
Result 4: NaN
Result 5: +Inf

Example 2:

// Golang program to illustrate how to round 
// off the given number to nearest even integer 
  
import ( 
    "fmt"
    "math"
) 
  
// Main function 
func main() { 
  
    // Using RoundToEven() function 
    nvalue_1 := math.RoundToEven(59.89) 
    nvalue_2 := math.RoundToEven(-7.567) 
  
    // Sum of the given numbers 
    res := nvalue_1 + nvalue_2 
    fmt.Printf("%.2f + %.2f = %.2f", 
            nvalue_1, nvalue_2, res) 
  
} 

Output:

60.00 + -8.00 = 52.00

math.Pow() Function in Golang With Examples

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