From dkuznetsov@titech.ac.jp Thu Apr 06 20:05:58 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!dkuznetsov From: dkuznetsov@titech.ac.jp (Diego Kuznetsov) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr06.200558.5388@titech.ac.jp> Date: Thu, 06 Apr 1995 20:05:58 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Diego Kuznetsov Hayes Optima 288 @ 9600 Telebit bps "Row 14. No joke." From adubois@demon.co.uk Sat Apr 08 11:08:58 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!adubois From: adubois@demon.co.uk (Aiko Dubois) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Apr08.110858.9674@demon.co.uk> Date: Sat, 08 Apr 1995 11:08:58 GMT References: <1995Apr06.200558.5388@titech.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Apr06.200558.5388@titech.ac.jp>, dkuznetsov@titech.ac.jp (Diego Kuznetsov) writes: > 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. If you are posting from AOL, please read RFC 1036 before posting again. -- Aiko Dubois *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0