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Re: FWD: FLOATING-POINT CONSISTENCY, -FFLOAT-STORE, AND X86
- To: Craig Burley <burley at gnu dot org>
- Subject: Re: FWD: FLOATING-POINT CONSISTENCY, -FFLOAT-STORE, AND X86
- From: hjstein at bfr dot co dot il (Harvey J. Stein)
- Date: 17 Dec 1998 22:16:12 +0200
- CC: toon at moene dot indiv dot nluug dot nl, egcs at cygnus dot com
- CC: hjstein at bfr dot co dot il
- References: <199812171805.NAA29038@melange.gnu.org>
Craig Burley <burley@gnu.org> writes:
> The opposite approach I'm seeing a few people advocating simply doesn't
> work for a product used so widely by so many people. I'd agree it's
> fine for, say, a shop like Toon's, but, these days, much of the work
> done porting numerical code to new compiler/OS/CPU combinations seems
> to be done by people who *don't* understand the numerical algorithms
> involved, and are thus just "code jockeys" who know the language (C,
> Fortran, whatever) well enough to handle ordinary "porting issues".
Those trying to port to ix86 *must* be porting code that doesn't
expect 80 bit cpu registers & therefore would actually produce results
closer to the original code with the FPU set to 64 bits.
--
Harvey J. Stein
BFM Financial Research
hjstein@bfr.co.il