Home » Golang » Golang Reference

Golang math.E Constant with Examples

Golang | math.E Constant: Here, we are going to learn about the E constant of the math package with its usages, syntax, and examples.
Submitted by IncludeHelp, on August 24, 2021

math.E Constant

The E constant is an inbuilt constant of the math package which is used to get the value of mathematical constant e. The number e, also known as Euler's number, is a mathematical constant approximately equal to 2.71828.

Syntax

float64 math.E

Parameters

• None

Return Value

The return type of math.E constant is float64, it returns the value of mathematical constant e.

Example 1

// Golang program to demonstrate the
// example of math.E Constant

package main

import (
	"fmt"
	"math"
)

func main() {
	fmt.Printf("Type of math.E is %T\n", math.E)
	fmt.Println("Value of math.E:", math.E)
}

Output:

Type of math.E is float64
Value of math.E: 2.718281828459045

Explanation:

In the above program, we imported the math package to use the math.E constant, then printed the type and value of the math.E constant.

Example 2

// Golang program to demonstrate the
// example of math.E Constant

package main

import (
	"fmt"
	"math"
)

// creating function to return
// the value of e.
func getE() float64 {
	return math.E
}

func main() {
	fmt.Println("Value of math.E:", getE())
}

Output:

Value of math.E: 2.718281828459045

Golang math Package Constants and Functions »

---