fgl_decimal_power()
Raises decimal to the power of the real exponent.
Syntax
fgl_decimal_power(
      x DECIMAL,
      y DECIMAL ) 
    RETURNS DECIMAL
- x is the decimal to be raised to the power of y.
 - y is the exponent.
 
Usage
Unlike the ** operator, the fgl_decimal_power()
 function supports real numbers for the exponent.