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Inverse Error Function of Given Number in Golang

  • Last Updated : 01 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 are allowed to find the inverse error function of the specified number with the help of Erfinv() 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 Erfinv() function.

Syntax:

func Erfinv(a float64) float64
  • If you pass 1 in this function, then this function will return +Inf.
  • If you pass -1 in this function, then this function will return -Inf.
  • If you pass NaN in this function, then this function will return NaN.
  • If the value of a < -1 or a > 1 in this function, then this function will return NaN.

Example 1:




// Golang program to illustrate how to find
// the inverse error function of the
// given number
   
package main
   
import (
    "fmt"
    "math"
)
   
// Main function
func main() {
   
    // Finding inverse error function
    // Using Erfinv() function
    res_1 := math.Erfinv(0.968)
    res_2 := math.Erfinv(1)
    res_3 := math.Erfinv(-1)
    res_4 := math.Erfinv(math.NaN())
   
    // 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)
   
}

Output:

Result 1: 1.5
Result 2: +Inf
Result 3: -Inf
Result 4: NaN

Example 2:




// Golang program to illustrate how to find
// the inverse error function of the
// given number
   
package main
   
import (
    "fmt"
    "math"
)
   
// Main function
func main() {
   
    // Finding inverse error function
    // Using Erfc() function
    nvalue_1 := math.Erfinv(0.5475)
    nvalue_2 := math.Erfinv(0.28547)
    res := nvalue_1 + nvalue_2
    fmt.Printf("%.1f + %.1f = %.1f",
            nvalue_1, nvalue_2, res)
   
}

Output:

0.5 + 0.3 = 0.8


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