From dfischer@illinois.edu Tue Mar 07 12:59:26 1995
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From: dfischer@illinois.edu (Dave Fischer)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar07.125926.3461@illinois.edu>
Date: Tue, 07 Mar 1995 12:59:26 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.
Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

Anyone running this on a Quadra 840AV with the 68040?

-- 
Dave Fischer -- University of Illinois Urbana-Champaign
"Measuring a record you own is listening, not piracy."

From jmacdonald@pacbell.net Tue Mar 07 17:26:26 1995
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From: jmacdonald@pacbell.net (Jen MacDonald)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar07.172626.1034@pacbell.net>
Date: Tue, 07 Mar 1995 17:26:26 GMT
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In article <1995Mar07.125926.3461@illinois.edu>, dfischer@illinois.edu (Dave Fischer) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).
> Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

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

-- 
Jen MacDonald
Tape trading list upon request. SASE required for international mail.