Implement missing math built-in POWER function

[Simar Arneja]

PHOENIX-1660 Implement missing math built-in functions/PHOENIX-1687

I am having some issues extracting arguments from an expression.
Presently to exract an argument i am doing:


double base = baseExpression.getDataType().getCodec().
decodeDouble(ptr,baseExpression.getSortOrder());

and this is throwing NullPointerException.

Any help?


Regards
Simar