thank you everyone for your prompt reply. Yeah surprisingly currency data type do take care of this.
Wish every one happy new year regards Vikas On Wed, Dec 30, 2009 at 3:52 PM, Kyley Harris <ky...@harrissoftware.com>wrote: > Another common issue I've had with doubles is > > x := 0 > > x = 0 can somtimes return false and the debugger might show 0.00000000001 > or something as a value even though it was hardcoded. > > I now use routines like NearZero (just an example name) which rounds test > values to a a reasonable test DP. > > > On Wed, Dec 30, 2009 at 11:19 PM, Kyley Harris > <ky...@harrissoftware.com>wrote: > >> Doubles and extendeds have always had minor rounding issues and other >> little things depending on the OS, and Hardware that its running on. The >> Currency is a special case which uses whole numbers rather than fractions >> for arithmetic. Its supposed to be guaranteed accurate to 4dp and they are >> not processed in the same way. >> >> >> On Wed, Dec 30, 2009 at 9:42 PM, Vikas... <vikas.im...@gmail.com> wrote: >> >>> Hi Edward, >>> >>> I use extended for both. >>> >>> does it cause problem? >>> >>> >>> On Wed, Dec 30, 2009 at 1:24 PM, Edward Koryagin >>> <ed_iv2...@yahoo.co.nz>wrote: >>> >>>> Use currency and everything should be fine. >>>> >>>> Edward Koryagin >>>> >>>> >>>> --- On Wed, 30/12/09, Edward Koryagin <ed_iv2...@yahoo.co.nz> wrote: >>>> >>>> > From: Edward Koryagin <ed_iv2...@yahoo.co.nz> >>>> > Subject: Re: [DUG] Need help with trunc command delphi 6 >>>> > To: "NZ Borland Developers Group - Delphi List" <delphi@delphi.org.nz >>>> > >>>> > Received: Wednesday, 30 December, 2009, 8:28 PM >>>> > What data types do you use for 4.5 >>>> > and 0.1? >>>> > >>>> > Edward Koryagin >>>> > >>>> > >>>> > --- On Wed, 30/12/09, Vikas... <vikas.im...@gmail.com> >>>> > wrote: >>>> > >>>> > > From: Vikas... <vikas.im...@gmail.com> >>>> > > Subject: [DUG] Need help with trunc command delphi 6 >>>> > > To: delphi@delphi.org.nz >>>> > > Received: Wednesday, 30 December, 2009, 8:00 PM >>>> > > Hello everyone, >>>> > > >>>> > > I am facing one strange problem here. We are using a >>>> > > banking teller application ,here we do calculation >>>> > based on >>>> > > denominations in short. >>>> > > >>>> > > My main problem is when we use this application for >>>> > long >>>> > > time with out closing it the trunc start giving >>>> > incorrect >>>> > > value what i mean is >>>> > > >>>> > > >>>> > > quantity := trunc(amount/value). >>>> > > >>>> > > Sometime when amount = let say 4.5 and value =0.1 it >>>> > gives >>>> > > like >>>> > > >>>> > > quantity := trunc(4.5/0.1)=44 which is wrong since my >>>> > > client complain it make them lose of 1 dollar amount. >>>> > > >>>> > > >>>> > > However when i close the application and do again all >>>> > works >>>> > > fine. >>>> > > >>>> > > Anyone ever faced this problem before , or anyone >>>> > know >>>> > > any substitute for trunc which works >>>> > > I am using delhi6 >>>> > > >>>> > > Appreciate your help >>>> > > >>>> > > >>>> > > regards >>>> > > vik >>>> > > >>>> > > -- >>>> > > vikas >>>> > > >>>> > > >>>> > > -----Inline Attachment Follows----- >>>> > > >>>> > > _______________________________________________ >>>> > > NZ Borland Developers Group - Delphi mailing list >>>> > > Post: delphi@delphi.org.nz >>>> > > Admin: http://delphi..org.nz/mailman/listinfo/delphi >>>> > > Unsubscribe: send an email to delphi-requ...@delphi.org.nz >>>> > > with Subject: unsubscribe >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > _______________________________________________ >>>> > NZ Borland Developers Group - Delphi mailing list >>>> > Post: delphi@delphi.org.nz >>>> > Admin: http://delphi.org.nz/mailman/listinfo/delphi >>>> > Unsubscribe: send an email to delphi-requ...@delphi.org.nz >>>> > with Subject: unsubscribe >>>> > >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> NZ Borland Developers Group - Delphi mailing list >>>> Post: delphi@delphi.org.nz >>>> Admin: http://delphi.org.nz/mailman/listinfo/delphi >>>> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with >>>> Subject: unsubscribe >>>> >>> >>> >>> >>> -- >>> vikas >>> >>> _______________________________________________ >>> NZ Borland Developers Group - Delphi mailing list >>> Post: delphi@delphi.org.nz >>> Admin: http://delphi.org.nz/mailman/listinfo/delphi >>> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >>> unsubscribe >>> >> >> >> >> -- >> Kyley Harris >> Harris Software >> +64-21-671-821 >> > > > > -- > Kyley Harris > Harris Software > +64-21-671-821 > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: delphi@delphi.org.nz > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: > unsubscribe > -- vikas
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