From gpark@pacbell.net Fri Jan 27 13:46:07 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!gpark
From: gpark@pacbell.net (Göran Park)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jan27.134607.1932@pacbell.net>
Date: Fri, 27 Jan 1995 13:46:07 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.

-- 
Göran Park
Tape trading list upon request. SASE required for international mail.

From okarlsson@kth.se Sat Jan 28 14:06:07 1995
Path: ashpoly!cascade!brgate!saturno!kth!okarlsson
From: okarlsson@kth.se (Olga Karlsson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jan28.140607.8597@kth.se>
Date: Sat, 28 Jan 1995 14:06:07 GMT
References: <1995Jan27.134607.1932@pacbell.net>
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In article <1995Jan27.134607.1932@pacbell.net>, gpark@pacbell.net (Göran Park) 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.

-- 
Olga Karlsson
Tape trading list upon request. SASE required for international mail.