Re: [myhdl-list] Interfaces in Interfaces

[Christopher F. <chr...@gm...>]

On 5/4/15 11:01 PM, Ben Reynwar wrote:
> Hi all,
>
> Is it possible to use interface definitions in interfaces?  For example
> I might have an interface for a complex number, and then an interface
> for a back-pressured stream of complex numbers that uses the complex
> number interface as a component.

Yes, it is possible.  A basic test case exists in
the test suite:

https://github.com/jandecaluwe/myhdl/blob/master/myhdl/test/conversion/general/test_interfaces3.py#L28

Regards,
Chris



>
> e.g.
>
> class Complex(object):
>
>      def __init__(self, width):
>          maxval = pow(2, width-1)-1

Note, Python is exclusive on the upper bounds, MyHDL
follows this concept.  The max bound is one more than
the max value.

(python exclusive upper bound)
http://stackoverflow.com/a/11364711/760977

Regards,
Chris