C++ Math exp2()

Math exp2() Function

In C++, the exp2() function is defined in the <cmath> or <math.h> header file and is used to calculate the base-2 exponential value of a given number. It computes the value of 2 raised to the power of the specified number.

The exp2() function accepts integer, float, double, and long double values as input and returns the result in floating-point form.

Suppose a number is 'x':

Syntax

It has the following syntax.

Parameters

x: It is the value of the exponent.

Return value

It returns, 2 raised to the power x.

Examples of the List exp2() Function

Here, we are going to discuss several examples to demonstrate the List exp2() Function Function.

Example 1: Calculate the Base-2 Exponential of a Positive Number Using exp2()

This example demonstrates how to calculate 2 raised to a positive power using the exp2() function.

Output:

Value of x is : 4
exp2(x) = 16

Example 2: Calculate the Base-2 Exponential of a Negative Number Using exp2()

This example demonstrates how to calculate 2 raised to a negative power using the exp2() function.

Output:

Value of x is : -2
exp2(x) = 0.25

Example 3: Calculate the Base-2 Exponential of Zero Using exp2()

This example demonstrates how to calculate 2 raised to the power 0 using the exp2() function. The value of exp2(0) is always equal to 1.

Output:

Value of x is : 0
exp2(x) = 1