From fatcity!root@news.cts.com Fri May 15 08:52:18 1998 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] ["1426" "Fri" "15" "May" "1998" "06:30:53" "-0800" "Steve Baker" "sbaker@link.com" nil "39" "Re: Endian swapping" "^From:" nil nil "5" nil nil nil nil nil] nil) Received: from mh2.cts.com (root@mh2.cts.com [205.163.24.68]) by meserv.me.umn.edu (8.8.8/8.8.8) with ESMTP id IAA18883 for ; Fri, 15 May 1998 08:52:18 -0500 (CDT) Received: from king.cts.com (root@king.cts.com [198.68.168.21]) by mh2.cts.com (8.8.7/8.8.5) with ESMTP id GAA12800; Fri, 15 May 1998 06:52:14 -0700 (PDT) Received: from donews.cts.com (root@donews.cts.com [192.188.72.21]) by king.cts.com (8.8.7/8.8.7) with SMTP id GAA18786; Fri, 15 May 1998 06:52:13 -0700 (PDT) Received: from fatcity by donews.cts.com with uucp (Smail3.1.29.1 #5) id m0yaKtA-00001sa; Fri, 15 May 98 06:51 PDT Received: by fatcity.com (10-Feb-1998/v1.0f-b64/bab) via UUCP id 00027B2C; Fri, 15 May 1998 06:30:53 -0800 Message-ID: X-Comment: OpenGL Game Developers Mailing List X-Sender: Steve Baker Reply-To: OPENGL-GAMEDEV-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0f, build 64; ListGuru (c) 1996-1998 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Content-Transfer-Encoding: 7bit From: Steve Baker Sender: root@fatcity.com To: Multiple recipients of list OPENGL-GAMEDEV-L Subject: Re: Endian swapping Date: Fri, 15 May 1998 06:30:53 -0800 On Fri, 15 May 1998, Sean L. Palmer wrote: > I'm trying to make this library as cross-platform as humanly possible with > my limited resources, so if anyone has any code to detect whether the target > is Big- or Little-endian, please e-mail it my way. /* Return TRUE if this machine is little endian, FALSE otherwise. */ int is_little_endian () { int i = 1 ; return *((char *) &i) ; } ...this works because the address of an integer on a little-endian machine is the address of the low order byte (whose value is 1) and on a big-endian machine, it's the address of the high order byte (whose value is 0). Steve Baker (817)619-8776 (Vox/Vox-Mail) Raytheon Systems Inc. (817)619-4028 (Fax) Work: SBaker@link.com http://www.hti.com Home: SJBaker1@airmail.net http://web2.airmail.net/sjbaker1 -- Author: Steve Baker INET: sbaker@link.com Fat City Network Services -- (619) 538-5051 FAX: (619) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB OPENGL-GAMEDEV-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).