Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jul 2002 12:20:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jul 2002 12:20:18 -0400 Received: from jalon.able.es ([212.97.163.2]:24305 "EHLO jalon.able.es") by vger.kernel.org with ESMTP id ; Fri, 12 Jul 2002 12:19:47 -0400 Date: Fri, 12 Jul 2002 18:22:29 +0200 From: "J.A. Magallon" To: Alan Cox Cc: Kirk Reiser , linux-kernel@vger.kernel.org Subject: Re: Advice saught on math functions Message-ID: <20020712162229.GC2348@werewolf.able.es> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: 7BIT In-Reply-To: ; from alan@lxorguk.ukuu.org.uk on Fri, Jul 12, 2002 at 16:39:41 +0200 X-Mailer: Balsa 1.3.6 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 939 Lines: 18 On 2002.07.12 Alan Cox wrote: >> Are these functions which are supplied by the FPU? I've looked >> through the fpu emulation headers and exp() is the only one I can find > >You can't use FPU operations in the x86 kernel. > Are you to worried about precission ? Can't you just do your sin() etc. in fixed point ? (and move all your fpdata to fixed point, of course) Or perhaps you could use some kind of DCT ? -- J.A. Magallon \ Software is like sex: It's better when it's free mailto:jamagallon@able.es \ -- Linus Torvalds, FSF T-shirt Linux werewolf 2.4.19-rc1-jam3, Mandrake Linux 8.3 (Cooker) for i586 gcc (GCC) 3.1.1 (Mandrake Linux 8.3 3.1.1-0.7mdk) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/