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pow

Syntax:

    #include <cmath>
    double pow( double base, double exp );

The pow() function returns base raised to the expth power. There's a domain error if base is zero and exp is less than or equal to zero. There's also a domain error if base is negative and exp is not an integer. There's a range error if an overflow occurs.

C++ also provides the following overloaded forms:

    #include <cmath>
    float pow( float base, float exp ); // same as powf() in C99
    long double pow( long double base, long double exp ); // same as powl() in C99

C++ also provides overloaded versions of pow() that perform integer exponentiation:

    #include <cmath>
    float pow( float base, int exp );
    double pow( double base, int exp );
    long double pow( long double base, int exp );

Related Topics: exp, log, sqrt

 
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