From snilsson@stanford.edu Tue Oct 24 06:18:14 1995
Path: ashpoly!cascade!bigsur!stanford!snilsson
From: snilsson@stanford.edu (Seo-yeon Nilsson)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct24.061814.5213@stanford.edu>
Date: Tue, 24 Oct 1995 06:18:14 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.
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.

-- 
Seo-yeon Nilsson
Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab.
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From yhernandez@kth.se Tue Oct 24 15:19:14 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!yhernandez
From: yhernandez@kth.se (Yuki Hernández)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Oct24.151914.1197@kth.se>
Date: Tue, 24 Oct 1995 15:19:14 GMT
References: <1995Oct24.061814.5213@stanford.edu>
Organization: Royal Institute of Technology, Stockholm
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In article <1995Oct24.061814.5213@stanford.edu>, snilsson@stanford.edu (Seo-yeon Nilsson) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

-- 
Yuki Hernández
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
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