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Synopsis:
    #include <math.h>
    double pow( double x, double y );

Description:
    The pow function computes x raised to the power y.  A domain error
    occurs if x is zero and y is less than or equal to 0, or if x is
    negative and y is not an integer.  A range error may occur.

Returns:
    The pow function returns the value of x raised to the power y.  When the
    argument is outside the permissible range, the  matherr function is
    called.  Unless the default  matherr function is replaced, it will set
    the global variable  errno to  EDOM, and print a "DOMAIN error"
    diagnostic message using the  stderr stream.

Example:
    #include <stdio.h>
    #include <math.h>

    void main()
      {
        printf( "%f\n", pow( 1.5, 2.5 ) );
      }

    produces the following:

    2.755676

Classification:
    ANSI

Systems:
    Math

See Also:
    exp, log, sqrt