pow

Syntax:

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

The pow() function returns *base* raised to the
*exp*th 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.

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