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- Newsgroups: comp.arch
- Path: sparky!uunet!rde!ksmith!keith
- From: keith@ksmith.uucp (Keith Smith)
- Subject: Re: BCD Addition
- Organization: Keith's Computer, Hope Mills, NC
- Date: Sat, 07 Nov 92 17:50:00 GMT
- Message-ID: <1992Nov07.175000.14703@ksmith.uucp>
- References: <1992Nov2.193053.7386@cs.cornell.edu> <32580141@hpcuhe.cup.hp.com> <1992Nov4.151413.4203@odin.diku.dk>
- Lines: 25
-
- In article <1992Nov4.151413.4203@odin.diku.dk> thorinn@diku.dk (Lars Henrik Mathiesen) writes:
- >campbelr@hpcuhe.cup.hp.com (Bob Campbell) writes:
- >>Well, since PA-RISC supports BCD directly ...
- >
- >To be more precise: PA-RISC maintains carry bits for each BCD digit,
- >which allows BCD addition/subtraction using a decimal correct
- >instruction after each normal ADD/SUB. (It has IDCOR to re-bias
- >intermediate results, and DCOR to un-bias final results.)
-
- [examples deleted]
-
- Which probably explains why HP is doing well in the business markets.
- I find it amusing that probably WAY more than half of the CPU cycles
- expended on this globe are probably for some business purpose, but that
- the CPU chips are often noticeably slanted to scientific use in their
- design and handling of numbers.
-
- Heck I use arctan and sin all the time at work ... That SPECfp test is
- REAL important to the zillions of business users out there. Of course
- it is the reasearch orginizations that are designing the stuff in the
- first place, so they obviously are slanted to the scientific.
- --
- Keith Smith uunet!ksmith!keith 5719 Archer Rd.
- Digital Designs BBS 1-919-423-4216 Hope Mills, NC 28348-2201
- Somewhere in the Styx of North Carolina ...
-