C++ - exp() Function
The C++ cmath exp() function is used to return 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 below example, 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