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From: "Martin Dowie" <martin.dowie@no_spam.btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: crc and Ada
Date: Sun, 18 May 2003 07:49:02 +0000 (UTC)
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"Bart�omiej �." <swierczu@wpk.p.lodz.pl> wrote in message
news:slrnbcec3j.rh.swierczu@staticline881.toya.net.pl...
> Hello,
> I'm starting in Ada, and I can't use same operators (like xor, and) in
> my programs. I need to count crc. In Java I was writting:
> #v+
> ...
> crc=(crctable[((crc>>8)^bufor[start+i++]) & 0xFF]^(crc<<8))&0xFFFF;
> ...
> #v-
> What I should use instand of 'xor' and 'and' oparator (becouse in Ada
> they are logical oparator, not binary). For example, I replace crc<<8 by
> crc*256, and crc>>8 crc/256, but what about xor?

You should check out 'modular types' and the standard package 'Interfaces'.

What compiler are you using? If the typical GNAT/AdaGIDE combo these
can be found under the Help->Language RM drop-down menu.

Also, check out www.adapower.com and the 'Learn Ada' option will take
you to link to a few free Ada95 books.

Good luck!