From olopez@cmu.edu Fri Feb 17 18:32:33 1995
Path: ashpoly!cascade!brgate!saturno!cmu!olopez
From: olopez@cmu.edu (Olga López)
Newsgroups: comp.sys.m68k
Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb17.183233.8833@cmu.edu>
Date: Fri, 17 Feb 1995 18:32:33 GMT
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Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.
By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.

I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector.

-- 
Olga López <olopez@cmu.edu>
*PLONK* filter active for trolls.
Atari Falcon 030 - NetBSD 1.0

From epetrov@hanse.de Sun Feb 19 08:37:33 1995
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From: epetrov@hanse.de (Élodie Petrov)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb19.083733.4894@hanse.de>
Date: Sun, 19 Feb 1995 08:37:33 GMT
References: <1995Feb17.183233.8833@cmu.edu>
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In article <1995Feb17.183233.8833@cmu.edu>, olopez@cmu.edu (Olga López) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead.

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-- 
Élodie Petrov -- Hanse-Netzwerk Hamburg
"Measuring a record you own is listening, not piracy."