Re: Fixed-point question

[Patrick Noffke <patrick.noffke@gmail.com>]

On Friday, June 26, 2015 at 11:56:44 AM UTC-5, Jeffrey R. Carter wrote:
> On 06/26/2015 06:20 AM, Patrick Noffke wrote:
> > 
> >    type Fixed_Type is delta 1.0 / 180.0 range 0.0 .. 65535.0 / 180.0;
> 
> What is Fixed_Type'Small?

It is 1/180.

> 
> >    C1 : constant Fixed_Type := Fixed_Type (N / D);
> 
> What is C1'Size?
> 
> If you really want to use multiples of 1/180, you probably want to do
> 
> Delta_And_Small : constant := 1.0 / 180.0;
> 
> type Fixed_Type is delta Delta_And_Small range 0.0 .. 65535.0 * Delta_And_Small;
> for Fixed_Type'Small use Delta_And_Small;
> 

I do that in my application.  I just did the above for a simple test case.  Doing as you suggest does not change the result on either platform.

Pat