From tschneider@ox.ac.uk Tue Sep 13 08:16:47 1994
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From: tschneider@ox.ac.uk (Takeshi Schneider)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Sep13.081647.8218@ox.ac.uk>
Date: Tue, 13 Sep 1994 08:16:47 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.

-- 
Takeshi Schneider
Tape trading list upon request. SASE required for international mail.

From ahughes@berkeley.edu Thu Sep 15 08:12:47 1994
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From: ahughes@berkeley.edu (Anton Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Sep15.081247.5429@berkeley.edu>
Date: Thu, 15 Sep 1994 08:12:47 GMT
References: <1994Sep13.081647.8218@ox.ac.uk>
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In article <1994Sep13.081647.8218@ox.ac.uk>, tschneider@ox.ac.uk (Takeshi Schneider) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

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

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Anton Hughes
Tape trading list upon request. SASE required for international mail.

From alarsson@cmu.edu Fri Sep 16 16:55:47 1994
Path: ashpoly!cascade!mxgate!coyoacan!cmu!alarsson
From: alarsson@cmu.edu (Astrid Larsson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Sep16.165547.3168@cmu.edu>
Date: Fri, 16 Sep 1994 16:55:47 GMT
References: <1994Sep13.081647.8218@ox.ac.uk> <1994Sep15.081247.5429@berkeley.edu>
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In article <1994Sep15.081247.5429@berkeley.edu>, ahughes@berkeley.edu (Anton Hughes) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
=== Astrid Larsson ===
Dept of Electrical Engineering, Carnegie Mellon University School of CS
"When every node is whole, the channel opens."

From bduarte@netcom.com Sun Sep 18 15:03:47 1994
Path: ashpoly!cascade!mxgate!coyoacan!netcom!bduarte
From: bduarte@netcom.com (Bill Duarte)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Sep18.150347.7265@netcom.com>
Date: Sun, 18 Sep 1994 15:03:47 GMT
References: <1994Sep13.081647.8218@ox.ac.uk> <1994Sep15.081247.5429@berkeley.edu> <1994Sep16.165547.3168@cmu.edu>
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In article <1994Sep16.165547.3168@cmu.edu>, alarsson@cmu.edu (Astrid Larsson) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

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

-- 
Bill Duarte -- NETCOM On-Line Communication Services
"Marcus is not one man."