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Golang math.Pi Constant with Examples

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

math.Pi Constant

The Pi constant is an inbuilt constant of the math package which is used to get the value of the mathematical constant π. The number π is a mathematical constant, approximately equal to 3.14159. It is defined in Euclidean geometry as the ratio of a circle's circumference to its diameter, and also has various equivalent definitions.

Syntax:

float64 math.Pi

Parameter(s):

  • None

Return Value:

The return type of math.Pi constant is float64, it returns the value of mathematical constant π.

Example 1:

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

package main

import (
	"fmt"
	"math"
)

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

Output:

Type of math.Pi is float64
Value of math.Pi: 3.141592653589793

Explanation:

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

Example 2:

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

package main

import (
	"fmt"
	"math"
)

// creating function to return 
// the value of Pi.
func getPi() float64 {
	return math.Pi
}

func main() {
	fmt.Println("Value of math.Pi:", getPi())
}

Output:

Value of math.Pi: 3.141592653589793

Golang math Package Constants and Functions »


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