From abrennan@kth.se Sat Apr 08 23:36:56 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!abrennan
From: abrennan@kth.se (Astrid Brennan)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Apr08.233656.5530@kth.se>
Date: Sat, 08 Apr 1995 23:36:56 GMT
Organization: Royal Institute of Technology, Stockholm
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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.

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

-- 
Astrid Brennan
Tape trading list upon request. SASE required for international mail.

From skang@pacbell.net Sun Apr 09 21:50:56 1995
Path: ashpoly!cascade!transat!ukc!fennimore!pacbell!skang
From: skang@pacbell.net (Sergei Kang)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Apr09.215056.5062@pacbell.net>
Date: Sun, 09 Apr 1995 21:50:56 GMT
References: <1995Apr08.233656.5530@kth.se>
Organization: Pacific Bell Internet Services
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In article <1995Apr08.233656.5530@kth.se>, abrennan@kth.se (Astrid Brennan) 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.

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
=== Sergei Kang ===
Dept of Electrical Engineering, Pacific Bell Internet Services
"Row 14. No joke."