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math.J0() 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 find the order-zero Bessel function of the first kind with the help of J0() 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 J0() function.

Syntax:

func J0(a float64) float64
  • If J0(┬▒Inf), then this function will return 0.
  • If J0(0), then this function will return 1.
  • If J0(NaN), then this function will return NaN.

Example 1:




// Golang program to illustrate
// the math.J0() function
package main
  
import (
    "fmt"
    "math"
)
  
// Main function
func main() {
  
    // Finding order-one Bessel
    // function of the first kind
    // Using J0() function
    res_1 := math.J0(math.Inf(-1))
    res_2 := math.J0(math.Inf(1))
    res_3 := math.J0(5)
    res_4 := math.J0(math.NaN())
  
    // Displaying the result
    fmt.Printf("\nResult 1: %.2f", res_1)
    fmt.Printf("\nResult 2: %.2f", res_2)
    fmt.Printf("\nResult 3: %.2f", res_3)
    fmt.Printf("\nResult 4: %.2f", res_4)
  
}

Output:

Result 1: 0.00
Result 2: 0.00
Result 3: -0.18
Result 4: NaN

Example 2:




// Golang program to illustrate
// the math.J0() function
package main
  
import (
    "fmt"
    "math"
)
  
// Main function
func main() {
  
    // Finding order-zero Bessel
    // function of the first kind
    // Using J0() function
    nvalue_1 := math.J0(2.0)
    nvalue_2 := math.J0(4.1)
  
    // Sum of the given numbers
    res := nvalue_1 + nvalue_2
    fmt.Printf("%.2f + %.2f = %.2f",
            nvalue_1, nvalue_2, res)
  
   
}

Output:

0.22 + -0.39 = -0.16



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