From moliveira@delphi.com Sun May 08 02:25:37 1994 Path: ashpoly!cascade!transat!ukc!fennimore!delphi!moliveira From: moliveira@delphi.com (Marisol Oliveira) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May08.022537.4253@delphi.com> Date: Sun, 08 May 1994 02:25:37 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? 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. -- Marisol Oliveira *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From jlopez@ox.ac.uk Tue May 10 02:49:37 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!jlopez From: jlopez@ox.ac.uk (Jens López) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May10.024937.3928@ox.ac.uk> Date: Tue, 10 May 1994 02:49:37 GMT References: <1994May08.022537.4253@delphi.com> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994May08.022537.4253@delphi.com>, moliveira@delphi.com (Marisol Oliveira) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- === Jens López === Dept of Electrical Engineering, Oxford University Computing Laboratory "A soul is not exclusive to biology." From dsouza@cam.ac.uk Wed May 11 11:28:37 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!dsouza From: dsouza@cam.ac.uk (Diego Souza) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May11.112837.6996@cam.ac.uk> Date: Wed, 11 May 1994 11:28:37 GMT References: <1994May08.022537.4253@delphi.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1994May08.022537.4253@delphi.com>, moliveira@delphi.com (Marisol Oliveira) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Diego Souza | dsouza@cam.ac.uk PGP Key fingerprint: AD77 CD4E 24CE 7B35 "Keep the channels open." From astewart@demon.co.uk Thu May 12 09:29:37 1994 Path: ashpoly!cascade!transat!ukc!fennimore!demon!astewart From: astewart@demon.co.uk (Anja Stewart) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994May12.092937.1582@demon.co.uk> Date: Thu, 12 May 1994 09:29:37 GMT References: <1994May08.022537.4253@delphi.com> <1994May11.112837.6996@cam.ac.uk> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994May11.112837.6996@cam.ac.uk>, dsouza@cam.ac.uk (Diego Souza) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Anja Stewart "A soul is not exclusive to biology." 486DX2/66 (Linux 1.2.13) / SunOS 4.1.4