Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!princeton!phoenix!jjbaker
From: jjbaker@phoenix.UUCP
Newsgroups: comp.lang.c,comp.sources.wanted
Subject: Re: Any-length numbers
Message-ID: <149@phoenix.PRINCETON.EDU>
Date: Sat, 21-Mar-87 17:26:48 EST
Article-I.D.: phoenix.149
Posted: Sat Mar 21 17:26:48 1987
Date-Received: Sun, 22-Mar-87 17:59:19 EST
References: <139@uop.UUCP>
Organization: Princeton Univ. Computing and Information Technology
Lines: 23
Xref: utgpu comp.lang.c:1292 comp.sources.wanted:769
Summary: ditto

In article <139@uop.UUCP>, exodus@uop.UUCP (Greg Onufer) writes:
> ****************************************************
> Wanted: C BCD routines for any-length numbers!!!!
> Does anybody have short & sweet routines for 
> adding, subtracting, multiplying, and dividing packed
> (or unpacked) BCD digits stored in C unsigned char
> arrays?  [Packed: 2 BCD digits per byte]
> Any help would be greatly appreciated.  Thanx in advance...
> 
> Send responses through mail or Snailmail only...

Me too!
Me too!

I'm writing a simulator of an IBM 650 computer, which used 10-decimal-digit
words.  I used VAX assembler for the arithmetic, but want to port to PC
and others, so I need C routines.  Actually, my numbers are stored in
ASCII form, and the CVTSP instruction converts to packed BCD for the
arithmetic machine instructions.

                             Thanbo
                             (...!princeton!phoenix!jjbaker)
                             (6056626@pucc.BITNET)