Groups > comp.sys.acorn.programmer > #2042

Unsigned integer comparison in Basic V

Subject	Unsigned integer comparison in Basic V
Newsgroups	comp.sys.acorn.programmer
From	Richard Porter <dontusethis@address.uk.invalid>
Date	2012-08-09 18:06 +0100
Message-ID	<9d64a2bc52.news@user.minijem.plus.com> (permalink)
Organization	Mini Marcos Owners Club

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In the latest update to SiteMatch I needed to compare timestamps which 
are 40-bit integers held in two words. Unfortunately comparing the 
bottom word went wrong because it was treated as being signed. As a 
result I had to write a little function to do an unsigned comparison 
which involved testing whether each integer was less than zero or not.

I was wondering if anyone has a neater solution to this problem, which 
has no doubt been encountered many times.

-- 
Richard Porter
rich@ / www. richardporter.me.uk
"You can't have Windows without pains."

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Unsigned integer comparison in Basic V Richard Porter <dontusethis@address.uk.invalid> - 2012-08-09 18:06 +0100
  Re: Unsigned integer comparison in Basic V Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-09 23:56 +0100
    Re: Unsigned integer comparison in Basic V Richard Porter <dontusethis@address.uk.invalid> - 2012-08-10 12:12 +0100
      Re: Unsigned integer comparison in Basic V "Ste (news)" <steve@revi11.plus.com> - 2012-08-10 14:10 +0100
        Re: Unsigned integer comparison in Basic V Jeremy Nicoll - news posts <jn.nntp.scrap007@wingsandbeaks.org.uk> - 2012-08-10 14:58 +0100
          Re: Unsigned integer comparison in Basic V "Ste (news)" <steve@revi11.plus.com> - 2012-08-13 16:14 +0100
        Re: Unsigned integer comparison in Basic V Steve Drain <steve@kappa.me.uk> - 2012-08-10 16:11 +0100
      Re: Unsigned integer comparison in?Basic V Justin Fletcher <gerph@gerph.org> - 2012-08-10 15:25 +0100
    Re: Unsigned integer comparison in Basic V jgh@arcade.demon.co.uk - 2012-08-10 15:49 -0700
      Re: Unsigned integer comparison in Basic V Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-08-11 19:44 +0100
      Re: Unsigned integer comparison in Basic V Richard Porter <dontusethis@address.uk.invalid> - 2012-08-13 16:19 +0100

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