From mito@utexas.edu Sat Apr 06 04:16:51 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!mito
From: mito@utexas.edu (Mikhail Ito)
Newsgroups: comp.sys.m68k
Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Apr06.041651.7223@utexas.edu>
Date: Sat, 06 Apr 1996 04:16:51 GMT
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Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.
Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

Make sure you install the 32-bit Enabler on older IIci machines running System 7.1!

-- 
Mikhail Ito -- University of Texas at Austin
"When every node is whole, the channel opens."

From npetrov@cmu.edu Sat Apr 06 18:05:51 1996
Path: ashpoly!cascade!bigsur!cmu!npetrov
From: npetrov@cmu.edu (Nadine Petrov)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Apr06.180551.9310@cmu.edu>
Date: Sat, 06 Apr 1996 18:05:51 GMT
References: <1996Apr06.041651.7223@utexas.edu>
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In article <1996Apr06.041651.7223@utexas.edu>, mito@utexas.edu (Mikhail Ito) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.
> By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.

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

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
=== Nadine Petrov ===
Dept of Electrical Engineering, Carnegie Mellon University School of CS
"Hardware is temporary. The signal survives."

From mgirard@panix.com Mon Apr 08 02:10:51 1996
Path: ashpoly!cascade!brgate!saturno!panix!mgirard
From: mgirard@panix.com (Mateo Girard)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Apr08.021051.6621@panix.com>
Date: Mon, 08 Apr 1996 02:10:51 GMT
References: <1996Apr06.041651.7223@utexas.edu>
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In article <1996Apr06.041651.7223@utexas.edu>, mito@utexas.edu (Mikhail Ito) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.
> By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes.

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

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
Mateo Girard
Opinions expressed are solely my own and not those of Public Access Unix of New York.
------------------------------------------------------------

From nlaurent@earthlink.net Mon Apr 08 06:41:51 1996
Path: ashpoly!cascade!brgate!saturno!earthlink!nlaurent
From: nlaurent@earthlink.net (Nadine Laurent)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1996Apr08.064151.2333@earthlink.net>
Date: Mon, 08 Apr 1996 06:41:51 GMT
References: <1996Apr06.041651.7223@utexas.edu> <1996Apr08.021051.6621@panix.com>
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In article <1996Apr08.021051.6621@panix.com>, mgirard@panix.com (Mateo Girard) writes:
> The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds.
> Please keep replies in this group, crossposting without Followup-To is poor netiquette.

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.

-- 
Nadine Laurent -- EarthLink Network
"A soul is not exclusive to biology."