Finding Mod of Given Number in Golang

Finding Natural Logarithm 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 natural logarithm of the specified number with the help of Log() 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 Log() function. Syntax:

func Log(a float64) float64

If you pass +Inf in this function, then this function will return +Inf.
If you pass 0 in this function, then this function will return -Inf.
If the value of a<0, then this function will return NaN.
If you pass NaN in this function, then this function will return NaN.

Example 1:

C

// Golang program to illustrate how to find the
// natural logarithm of the given number

package main

import (
    "fmt"
    "math"
)

// Main function
func main() {

    // Finding natural logarithm
    // of the given number
    // Using Log() function
    res_1 := math.Log(0)
    res_2 := math.Log(1)
    res_3 := math.Log(math.Inf(1))
    res_4 := math.Log(math.NaN())
    res_5 := math.Log(6)

    // 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: 1.8

Example 2:

C

// Golang program to illustrate how to find the
// natural logarithm of the given number

package main

import (
    "fmt"
    "math"
)

// Main function
func main() {

    // Finding natural logarithm 
    // of the given number
    // Using Log() function
    nvalue_1 := math.Log(4)
    nvalue_2 := math.Log(8)
    res := nvalue_1 + nvalue_2
    fmt.Printf("%.5f + %.5f = %.5f", 
           nvalue_1, nvalue_2, res)

}

Output:

1.38629 + 2.07944 = 3.46574

Finding Mod of Given Number in Golang

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