From mmacdonald@rwth-aachen.de Fri Jul 26 02:46:51 1996 Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!mmacdonald From: mmacdonald@rwth-aachen.de (Mateo MacDonald) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.024651.2593@rwth-aachen.de> Date: Fri, 26 Jul 1996 02:46:51 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Mateo MacDonald *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From blindqvist@netcom.com Fri Jul 26 06:35:51 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!netcom!blindqvist From: blindqvist@netcom.com (Bastien Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.063551.4948@netcom.com> Date: Fri, 26 Jul 1996 06:35:51 GMT References: <1996Jul26.024651.2593@rwth-aachen.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Jul26.024651.2593@rwth-aachen.de>, mmacdonald@rwth-aachen.de (Mateo MacDonald) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Bastien Lindqvist Tape trading list upon request. SASE required for international mail.