[dune-pdelab] [dune-pdelab-commit] dune-pdelab r471 - trunk/dune/pdelab/gridfunctionspace

[Bernd Flemisch]

Hey Christian,

On 05/17/2010 06:49 PM, Christian Engwer wrote:
> Hi Bernd,
>
>   
>> I managed to do a specialization
>>     template<typename T, int k>
>>     class PowerGridFunctionSpaceBase<T,k,GridFunctionSpaceBlockwiseMapper >
>> which works for me.
>>
>> I had to change the setup function from private to protected in order to
>> make it work. I don't know if this is acceptable.
>>
>> I attach a patch to gridfunctionspace.hh. Maybe you can have a look.
>>     
> I don't quite understand what this changes :-( actually the definition
> GridFunctionSpaceBlockwiseMapper<> should have had the same
> behaviour. Furthermore this will not work for composity functionspaces.
>   
I would also think so.

>   
>> +	template<typename T, int k>
>> +	class PowerGridFunctionSpaceBase<T,k,GridFunctionSpaceBlockwiseMapper >
>> +	: public PowerGridFunctionSpaceBase<T,k,GridFunctionSpaceComponentBlockwiseMapper<1> >
>> +	{};
>>     
> I would be really glad to have test program. Do you know any program
> in the howto that fails?!
>   
I found one which does not really fail, but which shows that the
specialization is not entered. Try
make dnapl
./dnapl 0 1 1 1

In the current svn version, only the general
    template<typename T, int k, typename P>
    class PowerGridFunctionSpaceBase
is used, while with the proposed addition the correct specialization
    template<typename T, int k, int s>
    class
PowerGridFunctionSpaceBase<T,k,GridFunctionSpaceComponentBlockwiseMapper<s>
>
is used.

But I do not know why it does not do so in the first place.

Kind regards
Bernd

> Christian
>
>   

-- 
_____________________________________________________________________

Bernd Flemisch                               phone: +49 711 685 69162
IWS, Universität Stuttgart                   fax:   +49 711 685 60430
Pfaffenwaldring 61                  email: bernd at iws.uni-stuttgart.de
D-70569 Stuttgart                  url: www.hydrosys.uni-stuttgart.de
_____________________________________________________________________