Re: Unsigned Integer Restraint Errors

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 13 Mar 2007 08:31:33 -0700, frikk wrote:

> On Mar 13, 10:58 am, "frikk" <frik...@gmail.com> wrote:
>> I have a bit of an unrelated (but kind of related) question:
>>
>> Are there any builtin square root functions? I thought this was
>> working, but I don't think it is anymore:
>> m := Integer(100**(0.5)+1);

See A.5.1 Ada.Numerics.Elementary_Functions it has sqrt and ** with the
right argument of Float.

>> This always coming out to 2. I;m using this to computer a maximum loop
>> value for finding primes. I'd like to loop from 2 to sqrt(n)/2 + 1.

Actually, you don't need sqrt for this, and alternative could be do loop
until the loop index I is such that

   I <= sqrt(n)/2+1

which is equivalent to

   I := 2;
   while 4*(I-1)*(I-1) <= n loop
      ...
      I := I + 1;
   end loop;

> Actually I need to specify - I really used (1/2), not (0.5). I'm not
> sure how that got in the code I posted...

The code you provided is illegal. In Ada you cannot mix types.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de