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: 103376,79db4ff72bff9422 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-10-26 10:46:14 PST Path: archiver1.google.com!news1.google.com!sn-xit-02!supernews.com!newsfeed.direct.ca!look.ca!newshub2.rdc1.sfba.home.com!news.home.com!news2.rdc2.tx.home.com.POSTED!not-for-mail From: "Smark" Newsgroups: comp.lang.ada References: <80d2e34.0110210156.7918cd3d@posting.google.com> <3bd402f9.8783319@news.demon.co.uk> <80d2e34.0110250340.155ae0b7@posting.google.com> <3BD7FE89.53BF8436@earthlink.net> <%oWB7.96$xS6.155@www.newsranger.com> <3BD8F891.BD8792B1@worldnet.att.net> Subject: Re: How to convert record? X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Message-ID: Date: Fri, 26 Oct 2001 17:46:14 GMT NNTP-Posting-Host: 24.254.173.165 X-Complaints-To: abuse@home.net X-Trace: news2.rdc2.tx.home.com 1004118374 24.254.173.165 (Fri, 26 Oct 2001 10:46:14 PDT) NNTP-Posting-Date: Fri, 26 Oct 2001 10:46:14 PDT Organization: Excite@Home - The Leader in Broadband http://home.com/faster Xref: archiver1.google.com comp.lang.ada:15268 Date: 2001-10-26T17:46:14+00:00 List-Id: "James Rogers" wrote in message news:3BD8F891.BD8792B1@worldnet.att.net... > Smark wrote: > > > > Well, would you worry about it with a type like this: > > > > type Bubba_Type is record > > C : Character; -- one byte > > I : Integer; -- 4 bytes > > end record; > > > > Bubba : Bubba_Type; > > > > Suppose that Integers must align on 4-byte boundaries. Then you might get: > > > > Bubba_Type'Size = 40 (= 5 bytes) > > > > (Typename'size + System.Storage_Unit - 1) / System.Storage_Unit > > = ( 40 + 8 - 1)/8 = 47/8 = 6 (bytes) > > > > But actually: > > > > Bubba'Size = 64 (= 8 bytes) > > > > Of course, you might be able to fix the problem by simply > reordering the components. The soundest way to do this is via a > representation clause. > > type Bubba_Type is record > I : Integer; > C : Character; > end record; > > for Bubba_Type use record > I : at 0 range 0..31; > C : at 4 range 0..7; > end record; > Okay, but reordering is not always an option. Also, it won't help if you need an array of Bubba_Type. Markku