From apark@inria.fr Sat Oct 01 10:55:32 1994 Path: ashpoly!cascade!brgate!saturno!inria!apark From: apark@inria.fr (Astrid Park) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct01.105532.4770@inria.fr> Date: Sat, 01 Oct 1994 10:55:32 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. 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. -- Astrid Park US Robotics Courier V.34 @ 14,400 bps "The carrier frequency does not drift by accident." From ncampbell@uni-hamburg.de Sun Oct 02 14:11:32 1994 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!ncampbell From: ncampbell@uni-hamburg.de (Nadia Campbell) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct02.141132.8701@uni-hamburg.de> Date: Sun, 02 Oct 1994 14:11:32 GMT References: <1994Oct01.105532.4770@inria.fr> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Oct01.105532.4770@inria.fr>, apark@inria.fr (Astrid Park) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. If you are posting from AOL, please read RFC 1036 before posting again. -- Nadia Campbell Tape trading list upon request. SASE required for international mail.