From tkang@delphi.com Fri Aug 11 07:44:19 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!delphi!tkang From: tkang@delphi.com (Tyler Kang) Newsgroups: comp.sys.m68k Subject: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug11.074419.5084@delphi.com> Date: Fri, 11 Aug 1995 07:44:19 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). 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. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Tyler Kang | tkang@delphi.com PGP Key fingerprint: C6AF 5EBA 07BB E5E2 "Keep the channels open." From mcampbell@illinois.edu Sat Aug 12 22:19:19 1995 Path: ashpoly!cascade!brgate!saturno!illinois!mcampbell From: mcampbell@illinois.edu (Mathieu Campbell) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug12.221919.6240@illinois.edu> Date: Sat, 12 Aug 1995 22:19:19 GMT References: <1995Aug11.074419.5084@delphi.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Aug11.074419.5084@delphi.com>, tkang@delphi.com (Tyler Kang) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Mathieu Campbell *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From hschneider@delphi.com Mon Aug 14 02:14:19 1995 Path: ashpoly!cascade!transat!ukc!fennimore!delphi!hschneider From: hschneider@delphi.com (Heather Schneider) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug14.021419.6600@delphi.com> Date: Mon, 14 Aug 1995 02:14:19 GMT References: <1995Aug11.074419.5084@delphi.com> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Aug11.074419.5084@delphi.com>, tkang@delphi.com (Tyler Kang) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Heather Schneider | hschneider@delphi.com PGP Key fingerprint: 882F 78A6 147D 4020 "Keep the channels open."