From bsouza@cern.ch Sat Jul 15 21:18:03 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cern!bsouza From: bsouza@cern.ch (Bastien Souza) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul15.211803.5918@cern.ch> Date: Sat, 15 Jul 1995 21:18:03 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. 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. -- Bastien Souza Zyxel U-1496E @ 33,600 bps "Hardware is temporary. The signal survives." From ssuzuki@ox.ac.uk Mon Jul 17 18:13:03 1995 Path: ashpoly!cascade!bigsur!ox!ssuzuki From: ssuzuki@ox.ac.uk (Steve Suzuki) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Jul17.181303.4534@ox.ac.uk> Date: Mon, 17 Jul 1995 18:13:03 GMT References: <1995Jul15.211803.5918@cern.ch> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul15.211803.5918@cern.ch>, bsouza@cern.ch (Bastien Souza) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > 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. -- Steve Suzuki US Robotics Courier V.34 @ 28,800 bps "They will send a copy in my place."