From efischer@illinois.edu Thu Nov 16 22:59:29 1995 Path: ashpoly!cascade!brgate!saturno!illinois!efischer From: efischer@illinois.edu (Élodie Fischer) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov16.225929.2948@illinois.edu> Date: Thu, 16 Nov 1995 22:59:29 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Élodie Fischer *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From ssilva@tum.de Fri Nov 17 10:26:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!ssilva From: ssilva@tum.de (Steve Silva) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov17.102629.9894@tum.de> Date: Fri, 17 Nov 1995 10:26:29 GMT References: <1995Nov16.225929.2948@illinois.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Nov16.225929.2948@illinois.edu>, efischer@illinois.edu (Élodie Fischer) writes: > 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- === Steve Silva === Dept of Electrical Engineering, Technische Universität München "There are 14 nodes and only 10 countries. Count again." From dkang@cmu.edu Sat Nov 18 01:25:29 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cmu!dkang From: dkang@cmu.edu (Dong-hyun Kang) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Nov18.012529.4434@cmu.edu> Date: Sat, 18 Nov 1995 01:25:29 GMT References: <1995Nov16.225929.2948@illinois.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Nov16.225929.2948@illinois.edu>, efischer@illinois.edu (Élodie Fischer) writes: > 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Dong-hyun Kang Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------