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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Truncating a fixed-point value
Date: Fri, 09 Jul 2010 21:34:04 +0100
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Date: 2010-07-09T21:34:04+01:00
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Adam Beneschan <adam@irvine.com> writes:

> I must be suffering from an embarrassing mental block, because I'm
> sure there's a simple solution, but I can't see what it is.
>
> I have a value X of a fixed-point type, X >= 0.0, and I need to
> compute Floor(X) as an Integer.  'Truncation and 'Floor aren't defined
> for fixed-point types; the type conversion Integer(X) rounds; and
> Integer(X-0.5) fails if X=0.0.
>
> How do others do this?  Or do I have to resort to an IF statement (or
> conditional expression in Ada 2012) to handle the different cases?

Looks as though Integer(X+0.5)-1 might do the trick ..