From ohernandez@pacbell.net Sat Oct 07 15:27:53 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!ohernandez From: ohernandez@pacbell.net (Olga Hernández) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct07.152753.7973@pacbell.net> Date: Sat, 07 Oct 1995 15:27:53 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Olga Hernández SupraFAXModem 28.8 @ 19,200 bps "Row 14. No joke." From hito@mit.edu Sun Oct 08 04:47:53 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!hito From: hito@mit.edu (Heather Ito) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct08.044753.6085@mit.edu> Date: Sun, 08 Oct 1995 04:47:53 GMT References: <1995Oct07.152753.7973@pacbell.net> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct07.152753.7973@pacbell.net>, ohernandez@pacbell.net (Olga Hernández) 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. -- === Heather Ito === Dept of Electrical Engineering, Massachusetts Institute of Technology "The hatch is open. Is anyone listening?"