BCD arithmetic algorithms needed

Article View: comp.os.os2.programmer.misc

Article #1

Back to comp.os.os2.programmer.misc Previous Next

From: bretz
Date: Sat, 09 Dec 1995 20:14

23 lines
1109 bytes

Hello,

I am planing to implement a c++ class for bcd arithmetic
and for accurate representation of monetary and the like.

Currently I have an idea for adding packed or unpacked
bcds by adding each digit and saving the decimal carry.
I plan to use the Intel 80x86 bcd instructions (AAD, AAM,
AAS, AAD, DAA and DAS) to implement the arithmetic.

but I have no good idea for subtracting, multiplying and
deviding packed or unpacked bcds.

Can somebody help???

Thank you

Thomas
_____________________________________________________________________
bretz@ibm.net
Thomas Bretz-Rieck
Hamburg, Germany
_____________________________________________________________________

Technical Details

Message-ID: <4acqng$3nfa@news-s01.ny.us.ibm.net>

Path: arc1-ca.pugleaf.net!news-m01.ny.us.ibm.net!usenet

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!news-m01.ny.us.ibm.net!usenet
From: bretz@ibm.net
Newsgroups: comp.os.os2.programmer.misc,comp.programming,comp.lang.c++,comp.lang.asm.x86,comp.lang.c,comp.sources.wanted
Subject: BCD arithmetic algorithms needed
Date: 9 Dec 1995 20:14:40 GMT
Message-ID: <4acqng$3nfa@news-s01.ny.us.ibm.net>
Reply-To: bretz@ibm.net
NNTP-Posting-Host: slip139-92-41-71.emea.ibm.net
X-Newsreader: IBM NewsReader/2 v1.2