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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Way to use Ada Mod function on floats?
Date: Sat, 02 Dec 2006 17:48:34 +0000
Organization: Pushface
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Date: 2006-12-02T17:48:34+00:00
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Gautier <gautier@fakeaddress.nil> writes:

> Stephen Leake:
>
>> SAL (http://stephe-leake.org/ada/sal.html) has:
>>
>>    function Modulo (Dividend, Divisor : in Real_Type) return Real_Type
>>    is
>>       --  match names in Ada LRM 4.5.5
>>
>>       A : Real_Type renames Dividend;
>>       B : Real_Type renames Divisor;
>>       N : constant Integer := Integer (Real_Type'Floor (A / B));
>>    begin
>>       return A - B * Real_Type (N);
>>    end Modulo;
>
> Out of curiosity, what is the need of converting Real_Type'Floor (A /
> B) to an Integer and back to a Real_Type ?

Especially when it can overflow and give you a Constraint_Error.