Syntax:

    #include <cmath>
    double exp( double arg );

The exp() function returns e (2.7182818) raised to the argth power.

C++ also provides the following overloaded forms:

    #include <cmath>
    float exp( float arg ); // same as expf() in C99
    long double exp( long double arg ); // same as expl() in C99

Related Topics: log, pow, sqrt