math.Jn() Function in Golang With Examples

math.Ldexp() Function in Golang with Examples

Last Updated : 28 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. This package provides Ldexp() function which is used to find the inverse of Frexp. Or in other words, this function return frac × 2**exp. So, you need to add a math package in your program with the help of the import keyword to access the Ldexp() function.

Syntax:

func Ldexp(frac float64, exp int) float64

If Ldexp(±0, exp), then this function will return ±0.
If Ldexp(±Inf, exp), then this function will return ±Inf.
If Ldexp(NaN, exp), then this function will return NaN.

Example 1:

// Golang program to illustrate  
// math.Ldexp() Function 
package main 
  
import ( 
    "fmt"
    "math"
) 
  
// Main function 
func main() { 
  
    // Finding the inverse of Frexp 
    // Using Ldexp() function 
    res_1 := math.Ldexp(1.1, 5) 
    res_2 := math.Ldexp(math.Inf(-1), 2) 
    res_3 := math.Ldexp(+0, 1) 
    res_4 := math.Ldexp(2, 5) 
    res_5 := math.Ldexp(math.NaN(), 1) 
  
    // Displaying the result 
    fmt.Printf("\nResult 1: %f", res_1) 
    fmt.Printf("\nResult 2: %f", res_2) 
    fmt.Printf("\nResult 3: %f", res_3) 
    fmt.Printf("\nResult 4: %f", res_4) 
    fmt.Printf("\nResult 5: %f", res_5) 
} 

Output:

Result 1: 35.200000
Result 2: -Inf
Result 3: 0.000000
Result 4: 64.000000
Result 5: NaN

Example 2:

// Golang program to illustrate 
// math.Ldexp() Function 
package main 
  
import ( 
    "fmt"
    "math"
) 
  
// Main function 
func main() { 
  
    // Finding the inverse of Frexp 
    // Using Ldexp() function 
    nvalue_1 := math.Ldexp(2, 5) 
    nvalue_2 := math.Ldexp(6, 2) 
  
    // Finding the sum of inverse of Frexp 
    res := nvalue_1 + nvalue_2 
    fmt.Println("Result 1: ", nvalue_1) 
    fmt.Println("Result 2: ", nvalue_2) 
    fmt.Println("Sum of Result 1 and Result 2: ", res) 
  
} 

Output:

Result 1:  64
Result 2:  24
Sum of Result 1 and Result 2:  88

math.Jn() Function in Golang With Examples

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Kirti_Mangal

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