Use the DDDecimalPower() function instead of the NSDecimalPower() function.  Fixes issue #12.
Use the DDDecimalPower() function instead of the NSDecimalPower() function.  Fixes issue #12.

hyperoslo/HYPMathParser,carabina/DDMathParser,carabina/DDMathParser,mrackwitz/DDMathParser,davedelong/DDMathParser,mrackwitz/DDMathParser,davedelong/DDMathParser