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Hi Robert,

when searching the internet I found a page which discused a BCD-Unit called AJCBCD.
Useing FTP-Search the only server with this file is ftp.ceu.fi.udc.es on
/home/ftp/development/pascal but I'm not able to download. ( perhaps I have rights
to read a directory but not to read files or me ftp-connect does not work ). Do you
know other locations of this file or other files with a BCD-Unit.

Thank you Robert for your help

Ralf




Robert AH Prins wrote:

> In article <367A4B0E.CA324425@gisma.de>,
>   r.rochow@gisma.de wrote:
> > Hi Robert,
> >
> > thinks about a medium list ( a customer having his acount for 5 years with 20
> > movements each month has about 1200 movments ) of cash-acounts, which are to
> > be calculated for a saldo. So in most currencys the fractional part has 2
> > digits and range from x,00 to x,99. So 0,25 or 0,50 are ( negative ) powers of
> > 2 they can be represented in biniary values ( double, extendet ) exactly.
> > Values like x,49 or x,96 can't be represendet in double-datatypes -> they
> > would result in something like x,489982938739 of x,960021232313. Add two of
> > this values and then rounding the result should bring up the correct value.
> > But adding hundreds or thousands of this values and then rounding the result
> > is a mistake.
>
> Unfortunately I am all to aware of this, at Willis we have to apportion
> premiums over many (dozens of) underwriters, and it's a nightmare. All of out
> batch programs actually abend if there are control differences, even if only
> 1 pence!
>
> As some posters wrote, use COMP (-2^63 .. 2^63-1), or consider splitting up
> your amounts into separate totals for the integer & fractional parts. It
> would extend your range to 2,147,483,647.99 (longint) or
> 9,223,372,036,854,775,807.99 (comp), which might be enough, and which would
> certainly be faster than using BCD.
>
> > The workaround is to round the value each time an operation is done.
>
> Very time consuming, especially if you're using the FPU as every rounding will
> save/change/restore the controlword when you're using pure Pascal.
>
> > In my newer c++ programs I use a BCD-Libray ( Money++ from roguewave )
> > and I have no problems with rounding error.
> >
> > So this is the first reason I'm looking for a BCD-Unit for pascal.
>
> Never considered writing some small C++ programs and looking at the generated
> code in this BCD library with debug or IDA?
>
> > The second reason is that I get this values from a ISAM-Database and put the
> > results to a database ( i use Btrieve 6.15 ). This database is able to deal
> > with BCD-Values directly.
> >
> > Do you have a good BCD-lib/unit or information where get a good BCD-lib/unit
> > please let me know.
>
> There are a few long-number units available on the pages of some of the
> regular posters in comp.lang.pascal.borland.
>
> Robert
> --
> Robert AH Prins
> prinsra@williscorroon.com
>
> -----------== Posted via Deja News, The Discussion Network ==----------
> http://www.dejanews.com/       Search, Read, Discuss, or Start Your Own



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<HTML>
Hi Robert,

<P>when searching the internet I found a page which discused a BCD-Unit
called AJCBCD. Useing FTP-Search the only server with this file is <A HREF="http://ftpsearch.lycos.com/cgi-bin/search?type=Navigate&query=ftp.ceu.fi.udc.es/">ftp.ceu.fi.udc.es</A>
on&nbsp; <A HREF="http://ftpsearch.lycos.com/cgi-bin/search?type=Navigate&query=ftp.ceu.fi.udc.es/home/ftp/development/pascal">/home/ftp/development/pascal</A>
but I'm not able to download. ( perhaps I have rights to read a directory
but not to read files or me ftp-connect does not work ). Do you know other
locations of this file or other files with a BCD-Unit.

<P>Thank you Robert for your help

<P>Ralf
<BR>&nbsp;
<BR>&nbsp;
<BR>&nbsp;

<P>Robert AH Prins wrote:
<BLOCKQUOTE TYPE=CITE>In article &lt;367A4B0E.CA324425@gisma.de>,
<BR>&nbsp; r.rochow@gisma.de wrote:
<BR>> Hi Robert,
<BR>>
<BR>> thinks about a medium list ( a customer having his acount for 5 years
with 20
<BR>> movements each month has about 1200 movments ) of cash-acounts, which
are to
<BR>> be calculated for a saldo. So in most currencys the fractional part
has 2
<BR>> digits and range from x,00 to x,99. So 0,25 or 0,50 are ( negative
) powers of
<BR>> 2 they can be represented in biniary values ( double, extendet )
exactly.
<BR>> Values like x,49 or x,96 can't be represendet in double-datatypes
-> they
<BR>> would result in something like x,489982938739 of x,960021232313.
Add two of
<BR>> this values and then rounding the result should bring up the correct
value.
<BR>> But adding hundreds or thousands of this values and then rounding
the result
<BR>> is a mistake.

<P>Unfortunately I am all to aware of this, at Willis we have to apportion
<BR>premiums over many (dozens of) underwriters, and it's a nightmare.
All of out
<BR>batch programs actually abend if there are control differences, even
if only
<BR>1 pence!

<P>As some posters wrote, use COMP (-2^63 .. 2^63-1), or consider splitting
up
<BR>your amounts into separate totals for the integer &amp; fractional
parts. It
<BR>would extend your range to 2,147,483,647.99 (longint) or
<BR>9,223,372,036,854,775,807.99 (comp), which might be enough, and which
would
<BR>certainly be faster than using BCD.

<P>> The workaround is to round the value each time an operation is done.

<P>Very time consuming, especially if you're using the FPU as every rounding
will
<BR>save/change/restore the controlword when you're using pure Pascal.

<P>> In my newer c++ programs I use a BCD-Libray ( Money++ from roguewave
)
<BR>> and I have no problems with rounding error.
<BR>>
<BR>> So this is the first reason I'm looking for a BCD-Unit for pascal.

<P>Never considered writing some small C++ programs and looking at the
generated
<BR>code in this BCD library with debug or IDA?

<P>> The second reason is that I get this values from a ISAM-Database and
put the
<BR>> results to a database ( i use Btrieve 6.15 ). This database is able
to deal
<BR>> with BCD-Values directly.
<BR>>
<BR>> Do you have a good BCD-lib/unit or information where get a good BCD-lib/unit
<BR>> please let me know.

<P>There are a few long-number units available on the pages of some of
the
<BR>regular posters in comp.lang.pascal.borland.

<P>Robert
<BR>--
<BR>Robert AH Prins
<BR>prinsra@williscorroon.com

<P>-----------== Posted via Deja News, The Discussion Network ==----------
<BR><A HREF="http://www.dejanews.com/">http://www.dejanews.com/</A>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Search, Read, Discuss, or Start Your Own</BLOCKQUOTE>
&nbsp;</HTML>

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