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-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,c1b618c3b35129ab X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-02-12 22:39:38 PST Path: supernews.google.com!sn-xit-02!supernews.com!news.gv.tsc.tdk.com!newsfeed.berkeley.edu!news-hog.berkeley.edu!ucberkeley!news.maxwell.syr.edu!intgwpad.nntp.telstra.net!news-server.bigpond.net.au!not-for-mail From: Dale Stanbrough Newsgroups: comp.lang.ada Subject: Re: logical operations in Ada Organization: RMIT References: <87pugp2x4p.fsf@deneb.enyo.de> <512i6.239390$JT5.8526649@news20.bellglobal.com> User-Agent: MT-NewsWatcher/3.0 (PPC) Message-ID: Date: Tue, 13 Feb 2001 06:43:00 GMT NNTP-Posting-Host: 144.132.95.65 X-Complaints-To: news@bigpond.net.au X-Trace: news-server.bigpond.net.au 982046580 144.132.95.65 (Tue, 13 Feb 2001 17:43:00 EST) NNTP-Posting-Date: Tue, 13 Feb 2001 17:43:00 EST Xref: supernews.google.com comp.lang.ada:5213 Date: 2001-02-13T06:43:00+00:00 List-Id: Freelancer wrote: > I am well aware of ada.characters.handling. That isn't my objective. > As you said, I am trying to fiddle with bits. How to do this in Ada? > > A small example would be greatly appreciated. :) > Thank you for your references though. You can use the appropriate routines, either by converting to an unsigned type, or to a packed boolean type. e.g. type Bit_Array is array (natural range <>) of Boolean; subtype Bit_Array_32 is Bit_Array (0..31); pragma Pack (Bit_Array_32); X : Bit_Array_32; X (1) := True; X := not X; X := X xor X; or... Item : Interfaces.Unsigned_16; Item := Item xor 2#0000_0000_1111_1010#; You can use Unchecked_Conversion to convert back and forth b/w your favourite type to do an even wider range of bit fiddling. Dale