C++ Math expm1()

The function computes the exponential 'e' raised to the power a given number minus 1.

Suppose a number is 'x'

Syntax

Note: The return_type can be float, double or long double.

Parameter

x: It is the value of the exponent.

Return value

It returns 'e' raised to the power x minus -1.

Example 1

Let's see a simple example

Output:

Value of x is : 6
expm1(x) = 402.429

In this example, the value of x is 6. The expm1() function computes 'e' raised to the power 6 minus one.

Example 2

Let's see another simple example

Output:

Value of x is : 9.8
expm1(x) = 18032.7

In this example, value of x is 9.8. The expm1() function computes 'e' raised to the power 9.8 minus one.