From tnilsson@panix.com Sat Oct 01 03:20:19 1994
Path: ashpoly!cascade!bigsur!panix!tnilsson
From: tnilsson@panix.com (Tobias Nilsson)
Newsgroups: comp.sys.m68k
Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Oct01.032019.6447@panix.com>
Date: Sat, 01 Oct 1994 03:20:19 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.

-- 
=== Tobias Nilsson ===
Dept of Electrical Engineering, Public Access Unix of New York
"The hatch is open. Is anyone listening?"

From mhughes@illinois.edu Sat Oct 01 10:03:19 1994
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From: mhughes@illinois.edu (Morag Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Oct01.100319.6257@illinois.edu>
Date: Sat, 01 Oct 1994 10:03:19 GMT
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In article <1994Oct01.032019.6447@panix.com>, tnilsson@panix.com (Tobias Nilsson) writes:
> 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.

The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

PGP Public key available via finger or upon request.

-- 
Morag Hughes
Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign.
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From jpark@ox.ac.uk Sun Oct 02 04:13:19 1994
Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!jpark
From: jpark@ox.ac.uk (Jens Park)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Oct02.041319.8462@ox.ac.uk>
Date: Sun, 02 Oct 1994 04:13:19 GMT
References: <1994Oct01.032019.6447@panix.com>
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In article <1994Oct01.032019.6447@panix.com>, tnilsson@panix.com (Tobias Nilsson) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.

-- 
Jens Park
Opinions expressed are solely my own and not those of Oxford University Computing Laboratory.
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