From mito@inria.fr Tue Feb 07 21:17:35 1995
Path: ashpoly!cascade!brgate!saturno!inria!mito
From: mito@inria.fr (Mathieu Ito)
Newsgroups: comp.sys.m68k
Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb07.211735.6119@inria.fr>
Date: Tue, 07 Feb 1995 21:17:35 GMT
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Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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.

I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector.

-- 
Mathieu Ito | mito@inria.fr
PGP Key fingerprint: 21CB F84F 90A5 C82B
"Keep the channels open."

From khughes@berkeley.edu Wed Feb 08 14:11:35 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!khughes
From: khughes@berkeley.edu (Kenji Hughes)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Feb08.141135.9952@berkeley.edu>
Date: Wed, 08 Feb 1995 14:11:35 GMT
References: <1995Feb07.211735.6119@inria.fr>
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In article <1995Feb07.211735.6119@inria.fr>, mito@inria.fr (Mathieu Ito) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).
> 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.

-- 
=== Kenji Hughes ===
Dept of Electrical Engineering, UC Berkeley Department of EECS
"Measuring a record you own is listening, not piracy."