Variable 'variable lengths'

[Taras_96]

Hi

I'm writing some code for simulation only (not synthesis). Is there
someway of declaring a unsigned variable's length in the body of a
function? So far I haven't had any success because you need to declare
the variable and its length before the body of the function, and you
can't declare an unconstrained variable.

Thanks

Taras

 

[Mike Treseler]

Is there
someway of declaring a unsigned variable's length in the body of a
function?

reference the length of the actual
argument right in the variable declaration
-- ...
)
return unsigned is
variable reg_v : unsigned(vec_arg'range);
begin
-- ...

So far I haven't had any success because you need to declare
the variable and its length before the body of the function, and you
can't declare an unconstrained variable.

No, but you can use an unconstrained parameter.

-- Mike Treseler

 

[Taras_96]

Thanks Mike