[GSLL-devel] Bug or feature: grid-map and complex type destinations

[Liam Healy]

Complex types are specified as (complex double-float), (complex
single-float), etc.  These work:

(map-grid :source #1m(-1d0 -2d0 -3d0)
	  :element-function #'sqrt
	  :destination-specification '((foreign-array 3) (complex double-float)))
#2m(#C(0.0d0 1.0d0) #C(0.0d0 1.4142135623730951d0)
    #C(0.0d0 1.7320508075688772d0))

(make-instance 'vector-complex-double-float :dimensions '(3)
:element-type '(complex double-float))
#2m(#C(0.0d0 0.0d0) #C(0.0d0 0.0d0) #C(0.0d0 0.0d0))

Note: you need to pull the latest version of GSD for the first case to
work, 307ba9efba fixes a bug in using the type specification.

Liam


On Fri, Nov 19, 2010 at 4:04 PM, Mirko Vukovic <mirko.vukovic at gmail.com> wrote:
> Hi,
>
> I am reporting this in case it is a gsd bug (it must be a bug
> somewhere: in my head, my setup, or gsd)
>
> Mapping the `sqrt' function over a vector of negative numbers as follows:
>
> grid> (map-grid :source #1m(-1d0 -2d0 -3d0)
>                :element-function #'sqrt
>                :destination-specification '((foreign-array 3) complex-double-float))
>
> gives an error:
>
> Element type COMPLEX-DOUBLE-FLOAT not permitted.
>   [Condition of type SIMPLE-ERROR]
>
> I traced it to a `make-instance' statement.
>
> I also tried to instantiate a vector-complex-double-float object
>
> grid> (make-instance 'vector-complex-double-float
>                     :dimensions '(3)
>                     :element-type 'complex-double-float)
>
> that resulted in the same error message.
>
> Mirko
>
> _______________________________________________
> GSLL-devel mailing list
> GSLL-devel at common-lisp.net
> http://common-lisp.net/cgi-bin/mailman/listinfo/gsll-devel
>