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Finding Binary Logarithm of Given Number in Golang

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 binary logarithm of the specified number with the help of Log2() 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 Log2() function.

Syntax:

func Log2(a float64) float64

Example 1:




// Golang program to illustrate how to find the
// binary logarithm of the given number
  
package main
  
import (
    "fmt"
    "math"
)
  
// Main function
func main() {
  
    // Finding binary logarithm
    // of the given number
    // Using Log2() function
    res_1 := math.Log2(0)
    res_2 := math.Log2(1)
    res_3 := math.Log2(math.Inf(1))
    res_4 := math.Log2(math.NaN())
    res_5 := math.Log2(36)
  
    // 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: -Inf
Result 2: 0.0
Result 3: +Inf
Result 4: NaN
Result 5: 5.2

Example 2:




// Golang program to illustrate how to find the
// binary logarithm of the given number
  
package main
  
import (
    "fmt"
    "math"
)
  
// Main function
func main() {
  
    // Finding binary logarithm
    // of the given number
    // Using Log2() function
    nvalue_1 := math.Log2(100)
    nvalue_2 := math.Log2(26)
    res := nvalue_1 + nvalue_2
    fmt.Printf("%.5f + %.5f = %.5f",
            nvalue_1, nvalue_2, res)
  
}

Output:

6.64386 + 4.70044 = 11.34430

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