From sjohansson@panix.com Sat Nov 19 19:13:05 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!sjohansson From: sjohansson@panix.com (Sun-mi Johansson) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov19.191305.4153@panix.com> Date: Sat, 19 Nov 1994 19:13:05 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Sun-mi Johansson SupraFAXModem 28.8 @ 28,800 bps "They will send a copy in my place." From skuznetsov@clari.net Mon Nov 21 11:45:05 1994 Path: ashpoly!cascade!mxgate!coyoacan!clari!skuznetsov From: skuznetsov@clari.net (Steve Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Nov21.114505.8788@clari.net> Date: Mon, 21 Nov 1994 11:45:05 GMT References: <1994Nov19.191305.4153@panix.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Nov19.191305.4153@panix.com>, sjohansson@panix.com (Sun-mi Johansson) 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 Kuznetsov Practical Peripherals 14.4 @ ISDN 64k bps "Marcus is not one man."