From cwatanabe@cern.ch Sat Oct 15 17:48:11 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!cwatanabe From: cwatanabe@cern.ch (Callum Watanabe) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct15.174811.2254@cern.ch> Date: Sat, 15 Oct 1994 17:48:11 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 10 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Callum Watanabe -- European Laboratory for Particle Physics, Geneva "In theory there is no difference between theory and practice." From jivanov@unam.mx Sun Oct 16 22:11:11 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!jivanov From: jivanov@unam.mx (Julien Ivanov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Oct16.221111.3452@unam.mx> Date: Sun, 16 Oct 1994 22:11:11 GMT References: <1994Oct15.174811.2254@cern.ch> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Oct15.174811.2254@cern.ch>, cwatanabe@cern.ch (Callum Watanabe) 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. -- Julien Ivanov "There are 14 nodes and only 10 countries. Count again." Macintosh IIfx / NEXTSTEP 3.3