From rkowalski@pacbell.net Sun Nov 24 07:32:32 1996 Path: ashpoly!cascade!bigsur!pacbell!rkowalski From: rkowalski@pacbell.net (Rodrigo Kowalski) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov24.073232.6803@pacbell.net> Date: Sun, 24 Nov 1996 07:32:32 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Rodrigo Kowalski SupraFAXModem 28.8 @ 19,200 bps "A soul is not exclusive to biology." From tfournier@tum.de Mon Nov 25 07:07:32 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!tfournier From: tfournier@tum.de (Thiago Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov25.070732.6376@tum.de> Date: Mon, 25 Nov 1996 07:07:32 GMT References: <1996Nov24.073232.6803@pacbell.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Nov24.073232.6803@pacbell.net>, rkowalski@pacbell.net (Rodrigo Kowalski) 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. -- Thiago Fournier *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0