Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!trantow
From: trantow@csd4.milw.wisc.edu (Jerry J Trantow)
Newsgroups: comp.sys.misc
Subject: Extended Precision Algorithms
Summary: References/ Code Wanted
Message-ID: <867@csd4.milw.wisc.edu>
Date: 10 Feb 89 19:37:16 GMT
Sender: news@csd4.milw.wisc.edu
Reply-To: trantow@csd4.milw.wisc.edu (Jerry J Trantow)
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Organization: University of Wisconsin-Milwaukee
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References:

Could someone please point me to some references for extended precision
arithmetic with the 68000 (and 020).  I need to work with QUADs, so that
I don't overflow unsigned longs (32bits) during some calculations.  I 
already have working QuadAdd(), QuadMult(), and QuadDiv() assembly routines.
I think my QuadAdd() and QuadMult() are fairly good, but it seems like my
QuadDiv() could be simplified.
I would appreciate any references to 64/32=32 bit division and 32X32=64 bit
multiplies.
By the way, the 020 instructions make this stuff trivial, but I want to 
have versions that will work with either processor.