C++ cmath exp() function
Example
Return e raised to the power of different numbers:
cout << exp(0);
cout << exp(1);
cout << exp(10);
cout << exp(4.8);
cout << exp(2.718);
Definition and Usage
The exp() function returns the result of e raised to the power of a number (ex).
The exp() function is defined in the <cmath> header file.
e is the base of the natural system of logarithms (approximately 2.718282). Some implementations of the <cmath> library include a constant M_E but it is not guaranteed to be available.
Syntax
One of the following:
exp(double number);exp(float number);Parameter Values
| Parameter | Description |
|---|---|
| number |
Required. Specifies the power to which e is raised. If the number is an integer type then it will be treated as a double.
|
Technical Details
| Returns: | A float value (if the argument is float) or double value (in any other case) representing the result of e to the power of a number. |
|---|
