Operator to compare numeric and double precision

Hello all,

It is a basic question (I hope it).

Are there any operator to compare numeric with double precision ?

It is something relative to Delphi/ODBC stuff. I cannot cast neither numeric nor double precision operands. I must to get an operator to compare something like this:
-*- numeric = double precision
-*- 1 = 1.00000 (and get TRUE)..

Numeric type is identified by Delphi with float type (independent of its ZERO precision), and here is the problem because in spite of I am passing -1- to the parameter, Delphi is converting it to 1.00000.

Thanks in advance...