From evasiliev@berkeley.edu Fri Feb 02 02:57:39 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!evasiliev
From: evasiliev@berkeley.edu (Élodie Vasiliev)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Feb02.025739.5032@berkeley.edu>
Date: Fri, 02 Feb 1996 02:57:39 GMT
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.
A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

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

-- 
Élodie Vasiliev
Opinions expressed are solely my own and not those of UC Berkeley Department of EECS.
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From rrobertson@u-tokyo.ac.jp Fri Feb 02 04:48:39 1996
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From: rrobertson@u-tokyo.ac.jp (Raj Robertson)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Feb02.044839.5872@u-tokyo.ac.jp>
Date: Fri, 02 Feb 1996 04:48:39 GMT
References: <1996Feb02.025739.5032@berkeley.edu>
Organization: University of Tokyo Department of Information Science
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In article <1996Feb02.025739.5032@berkeley.edu>, evasiliev@berkeley.edu (Élodie Vasiliev) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?
> By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
=== Raj Robertson ===
Dept of Electrical Engineering, University of Tokyo Department of Information Science
"Tape doesn't lie at 02:14. Ears do."