From cpetrov@purdue.edu Mon Nov 04 13:47:57 1996
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From: cpetrov@purdue.edu (Camila Petrov)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Nov04.134757.4037@purdue.edu>
Date: Mon, 04 Nov 1996 13:47:57 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.

-- 
Camila Petrov -- Purdue University Engineering Computer Network
"A soul is not exclusive to biology."

From ooliveira@demon.co.uk Tue Nov 05 06:07:57 1996
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From: ooliveira@demon.co.uk (Olga Oliveira)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Nov05.060757.8185@demon.co.uk>
Date: Tue, 05 Nov 1996 06:07:57 GMT
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In article <1996Nov04.134757.4037@purdue.edu>, cpetrov@purdue.edu (Camila Petrov) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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

-- 
=== Olga Oliveira ===
Dept of Electrical Engineering, Demon Internet Services UK
"Measuring a record you own is listening, not piracy."