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

[Mirko Vukovic]

thanks.

Unfortunately, I cannot try it right now.  I am having some weird
issues with asdf -- it enters into an infinite loop and exceeds the
nesting limit.

I will work on this next week.

Mirko



On Fri, Nov 19, 2010 at 5:21 PM, Liam Healy <lhealy at common-lisp.net> wrote:
> 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
>>
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>