Tpetra_Details_Blas.hpp

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#ifndef TPETRA_DETAILS_BLAS_HPP
#define TPETRA_DETAILS_BLAS_HPP


#include "TpetraCore_config.h"
#include "Kokkos_Core.hpp"
#include "Kokkos_Complex.hpp"
#include <type_traits>

namespace Tpetra {
namespace Details {
namespace Blas {

template<class ScalarType>
struct BlasSupportsScalar {
  static constexpr bool value =
    std::is_same<ScalarType, float>::value ||
    std::is_same<ScalarType, double>::value ||
    std::is_same<ScalarType, ::Kokkos::complex<float> >::value ||
    std::is_same<ScalarType, ::Kokkos::complex<double> >::value;
};

template<class LayoutType>
struct BlasSupportsLayout {
  static constexpr bool value =
    std::is_same<LayoutType, ::Kokkos::LayoutLeft>::value;
};

template<class ViewType,
         class IndexType = int>
IndexType
getStride2DView (const ViewType& A)
{
  IndexType stride[8];
  A.stride (stride);
  return (A.dimension_1 () > 1) ? stride[1] : A.dimension_0 ();
}

} // namespace Blas
} // namespace Details
} // namespace Tpetra

#endif // TPETRA_DETAILS_BLAS_HPP