Re: [myhdl-list] Converting std_logic_vector to signed and vice versa

[Kevin S. <sta...@gm...>]

>signed is not a subtype of std_logic_vector. However, type
>conversions between the two are trivial because they are
>closely related, meaning that you can cast using the
>target type name as a conversion function.

Ah yes, but both are types made up of arrays of std_logic.

On Mon, Jan 10, 2011 at 2:19 AM, Jan Decaluwe <ja...@ja...> wrote:

> Kevin Stanton wrote:
> > The signed type is a subtype of std_logic_vector (see the
> > ieee.numeric_std package). Assuming you can used a signed binary word
> > throughout, there should be no need to convert to std_logic_vector,
> > unless you need to do arithmetic elsewhere that is unsigned and you wish
> > to convert it to unsigned format.
>
> signed is not a subtype of std_logic_vector. However, type
> conversions between the two are trivial because they are
> closely related, meaning that you can cast using the
> target type name as a conversion function.
>
>
> --
> Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com
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Kevin R. Stanton
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