Re: BLAS

[Robert A Duff <bobduff@world.std.com>]

Duncan Sands <sands@topo.math.u-psud.fr> writes:

> >> generic
> >>    type Float_Type is digits <>;
> >>    type Matrix is array (Integer range <>, Integer range <>) of Float_Type'Base;
> >> 
> >> is rejected by GNAT.  
> >
> >On what grounds?  It looks legal to me...
> 
> GNAT says:
> 3.    type Matrix is array (Integer range <>, Integer range <>) of Float_Type'Base;
>                      |
> >>> only a subtype mark is allowed in a formal
> 
> The RM says (Generic Units - Formal Array Types): "The only form of
> discrete_subtype_definition that is allowed within the declaration of
> a generic formal (constrained) array subtype is a subtype_mark."

But Float_Type'Base *is* a subtype_mark.  See AARM-3.2.2(4.a).
I suggest you send a bug report.

- Bob