Amesos2_SolverTraits.hpp

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#ifndef AMESOS2_SOLVERTRAITS_HPP
#define AMESOS2_SOLVERTRAITS_HPP

#include "Amesos2_Meta.hpp"

namespace Amesos2 {

  template <template <class,class> class ConcreteSolver>
  struct solver_traits {
    typedef Meta::nil_t supported_scalars;
  };

  
  // Related meta-functions //
  
  template <template <class,class> class ConcreteSolver,
      typename Scalar>
  struct solver_supports_scalar {
    static const bool value;
  };

  /*
   * If a solver's supported_scalars type-list is nil, this
   * meta-function returns true always.  Otherwise, it checks whether
   * the given type is in the solver's supported_scalars list.
   */
  template <template <class,class> class ConcreteSolver, typename Scalar>
  const bool solver_supports_scalar<ConcreteSolver,Scalar>::value
  = Meta::if_then_else<Meta::is_same<typename solver_traits<ConcreteSolver>::supported_scalars, Meta::nil_t>::value,
           Meta::true_type,
           Meta::type_list_contains<
       typename solver_traits<ConcreteSolver>::supported_scalars,
       Scalar> >::type::value;


} // end namespace Amesos2

#endif  // AMESOS2_SOLVERTRAITS_HPP