>Hi George,
>
>I run on XPSP1 ita, VFP6SP5 or VFP7SP1 or VFP8SP1 with:
>or Regional System Setting
>or American
>or Italian
>
>Also this:
>

>CLEAR
>
>SET DECIMALS TO 18  && you can put any valid values
>SET FIXED ON       && you can put ON/OFF
>lnDiff = {^2000-03-20 11:31:00} - {^2000-03-20 10:25:00}+0.0
>zz={^2000-03-20 11:31:00} - {^2000-03-20 10:25:00} + 0.00
>
>* variables are equal
>? m.lnDiff=m.zz , VARTYPE(m.lnDiff,.T.)=VARTYPE(m.zz,.T.)
>* this return .T.,.T.
>
>* same deterministic function INT(),
>* with same input value return different result !!!
>? INT(m.lnDiff)=INT(m.zz)
>* this return .F.
>

>print:
>

>.T. .T.
>.F.
>

>
>????? why you have a .T. ?
>
Fabio,

I don't know. What I do know, however, is this. You're forcing VFP into double precision floating point math. Datetimes are limited to accepting integers. In essence, you're expect the same results. Not gonna happen. What's wrong with using the INT() or ROUND() functions?