From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,5ff6e0c3de8331c0
X-Google-Attributes: gid103376,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news1.google.com!newsfeed2.dallas1.level3.net!news.level3.com!newsfeed-00.mathworks.com!kanaga.switch.ch!switch.ch!news.belwue.de!th!lucks
From: Stefan Lucks <lucks@th.informatik.uni-mannheim.de>
Newsgroups: comp.lang.ada
Subject: Re: sub-optimal code for packed boolean arrays -- bug or inherent
 limitation
Date: Tue, 3 Jul 2007 14:40:21 +0200
Organization: InterNetNews at News.BelWue.DE (Stuttgart, Germany)
Message-ID: <Pine.LNX.4.64.0707031439190.8642@th.informatik.uni-mannheim.de>
References: <1183404856.375083.160890@q69g2000hsb.googlegroups.com>
 <Pine.LNX.4.64.0707031117100.30902@th.informatik.uni-mannheim.de>
NNTP-Posting-Host: th.informatik.uni-mannheim.de
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-Trace: news.belwue.de 1183466423 11280 134.155.91.85 (3 Jul 2007 12:40:23
 GMT)
X-Complaints-To: news@news.belwue.de
NNTP-Posting-Date: Tue, 3 Jul 2007 12:40:23 +0000 (UTC)
In-Reply-To: <Pine.LNX.4.64.0707031117100.30902@th.informatik.uni-mannheim.de>
Xref: g2news1.google.com comp.lang.ada:16394
Date: 2007-07-03T14:40:21+02:00
List-Id: <comp.lang.ada>

On Tue, 3 Jul 2007, Stefan Lucks wrote:

> As Clear, internally using XOR, is optimised well, have you tried to rewrite 
> Flip using XOR for bit-flipping, e.g., as follows:

sorry, I meant

     procedure Flip(B : in out Bitboard_T; I : in Index_T) is
     begin
         B(I) := B(I) xor True;
     end;



-- 
Stefan Lucks      (moved to Bauhaus-University Weimar, Germany)
 		       <Stefan.Lucks at medien.uni-weimar.de>
------  I  love  the  taste  of  Cryptanalysis  in  the  morning!  ------