Hi Fabian,

Read on help:

Numeric Data Type

VFP variable are stored on
floating point,
integer
and currency.

Max integer value is 2^53 = 9007199254740992

? 9007199254740992-(9007199254740992+1)
? 9007199254740992-9007199254740992+1

Computation with decimal numbers is done in floating point with exponent.

Fabio