[Dune] Remark BartonNackman Interface Check.

[Robert Kloefkorn]

Hello Dune,

some remarks to the CHECK_INTERFACE_IMPLEMENTATION.
This macro is only non-empty if NDEBUG is __not__ and DUNE_DEVEL_MODE
__is__ defined. The reason is, that for checking the implementation this
macro at the moment needs to call the desired method twice, which is a
hindrance of this method, but it works.

For methods returning void one can use the macro
CHECK_AND_CALL_INTERFACE_IMPLEMENTATION which does the check and calls
the method. if NDEBUG is defined, this macro just calls the interface
method and the cehck is disabled.

For details see source list (dune-common/common/bartonnackmanifcheck.hh)

Regards

R

-- 

  Robert Klöfkorn           <robertk at mathematik.uni-freiburg.de>

  Mathematisches Institut              Tel: +49 (0) 761 203 5631
  Abt. für Angewandte Mathematik       Fax: +49 (0) 761 203 5632
  Universität Freiburg
  Hermann-Herder-Str. 10
  79104 Freiburg

  http://www.mathematik.uni-freiburg.de/IAM/homepages/robertk