From jsilva@cern.ch Tue Jul 12 10:33:12 1994 Path: ashpoly!cascade!bigsur!cern!jsilva From: jsilva@cern.ch (Joachim Silva) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jul12.103312.2098@cern.ch> Date: Tue, 12 Jul 1994 10:33:12 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Joachim Silva Tape trading list upon request. SASE required for international mail. From mdubois@earthlink.net Tue Jul 12 22:23:12 1994 Path: ashpoly!cascade!brgate!saturno!earthlink!mdubois From: mdubois@earthlink.net (Mateo Dubois) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jul12.222312.2753@earthlink.net> Date: Tue, 12 Jul 1994 22:23:12 GMT References: <1994Jul12.103312.2098@cern.ch> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jul12.103312.2098@cern.ch>, jsilva@cern.ch (Joachim Silva) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Mateo Dubois SupraFAXModem 28.8 @ 19,200 bps "There are 14 nodes and only 10 countries. Count again."