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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Decimal number of interger?
References: <3BD70DE5.C2D2B6FD@ida.his.se>
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Date: Wed, 24 Oct 2001 19:54:18 GMT
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Date: 2001-10-24T19:54:18+00:00
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>How do I determine weather the result from a function has a decimal part
>or not?
  x : float := function_value(y);
begin
  if float(integer(x)) = x then -- decimal part of x is zero

>I want to use the log function to se weather the width of the terrain is
>(2^x)+1. In order to do this I want to use the following:
>log2(width-1) = "float without decimal part"
  test : interfaces.unsigned_32 := interfaces.unsigned_32(width-1);
begin
  if (test and (test-1)) = 0 then -- test (ie, width-1) is a power of 2.