GoLang – Find Binary Logarithm – Log2() Function – Examples & Explanation

The syntax of Log2() function in Go Language is:

func Log2(x float64) float64

Note: float64 is a data type in Go language which has IEEE-754 64-bit floating-point numbers.
Special cases are:
Log(+Inf) = +Inf
Log(0) = -Inf
Log(x < 0) = NaN
Log(NaN) = NaN

x – Where x is any Valid float64 Input value. This parameter is required.

If the x parameter is not a number (numeric value) Log2() function returns an error .
If there is no argument (x – input value) passes to the function, then the compiler will produce an error.

Log2() function will return the binary logarithm of the given input(x – parameters).

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Log2(-2.44)
	fmt.Println(x)
} 

Output:
NaN

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Log2(6.86)
	fmt.Println(x)
} 

Output:
2.7782085763980877

package main

import "fmt"
import "math"

func main() {
	var x float64
	x = math.Log2(4)
	fmt.Println(x)
} 

Output:
2