C++ <cmath> - exp() Function
The C++ <cmath> exp() function returns e raised to the power of specified number, i.e., ex. Please note that e is the base of the natural system of logarithms, and its value is approximately 2.718282.
Syntax
double exp (double x); float exp (float x); long double exp (long double x);
double exp (double x); float exp (float x); long double exp (long double x); //additional overloads for integral types double exp (T x);
Parameters
x |
Specify the exponent of e. |
Return Value
Returns e raised to the power of specified number.
Example:
In the example below, exp() function is used to calculate e raised to the power of specified number.
#include <iostream>
#include <cmath>
using namespace std;
int main (){
cout<<exp(2)<<"\n";
cout<<exp(-2)<<"\n";
cout<<exp(1.5)<<"\n";
cout<<exp(-1.5)<<"\n";
return 0;
}
The output of the above code will be:
7.38906 0.135335 4.48169 0.22313
❮ C++ <cmath> Library
