From lsantos@earthlink.net Thu Feb 24 18:14:43 1994
Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!lsantos
From: lsantos@earthlink.net (Lucia Santos)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Feb24.181443.5038@earthlink.net>
Date: Thu, 24 Feb 1994 18:14:43 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.

Anyone running this on a Quadra 840AV with the 68040?

-- 
Lucia Santos | lsantos@earthlink.net
PGP Key fingerprint: 1AA0 7420 0194 1E68
"Keep the channels open."

From dlaurent@u-tokyo.ac.jp Fri Feb 25 06:44:43 1994
Path: ashpoly!cascade!transat!ukc!fennimore!u-tokyo!dlaurent
From: dlaurent@u-tokyo.ac.jp (Dong-hyun Laurent)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1994Feb25.064443.6397@u-tokyo.ac.jp>
Date: Fri, 25 Feb 1994 06:44:43 GMT
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In article <1994Feb24.181443.5038@earthlink.net>, lsantos@earthlink.net (Lucia Santos) writes:
> Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882).

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

-- 
Dong-hyun Laurent | dlaurent@u-tokyo.ac.jp
PGP Key fingerprint: 5459 1536 E558 40B4
"Keep the channels open."