From mstewart@netcom.com Mon Jul 10 12:29:15 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!mstewart
From: mstewart@netcom.com (Mateo Stewart)
Newsgroups: comp.sys.m68k
Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jul10.122915.5160@netcom.com>
Date: Mon, 10 Jul 1995 12:29:15 GMT
Organization: NETCOM On-Line Communication Services
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Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?

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.

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

-- 
Mateo Stewart -- NETCOM On-Line Communication Services
"Hardware is temporary. The signal survives."

From ctanaka@demon.co.uk Tue Jul 11 00:07:15 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!demon!ctanaka
From: ctanaka@demon.co.uk (Camila Tanaka)
Newsgroups: comp.sys.m68k
Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Jul11.000715.9280@demon.co.uk>
Date: Tue, 11 Jul 1995 00:07:15 GMT
References: <1995Jul10.122915.5160@netcom.com>
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In article <1995Jul10.122915.5160@netcom.com>, mstewart@netcom.com (Mateo Stewart) writes:
> Can a 1989 Mac IIci decode a 40-minute LP in reasonable time?
> Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow.

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

-- 
=== Camila Tanaka ===
Dept of Electrical Engineering, Demon Internet Services UK
"Tape doesn't lie at 02:14. Ears do."