armadillo_helpers.hpp

// Copyright (C) 2011-2012 by the BEM++ Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef bempp_armadillo_helpers_hpp
#define bempp_armadillo_helpers_hpp

#include "../common/common.hpp"


#include "../common/armadillo_fwd.hpp"
#include <dune/common/fvector.hh>

// Internal implementations for general Armadillo objects
template<typename M, typename T, int size>
bool _armadillo_fieldvector_compare(const M& x, const Dune::FieldVector<T, size>& y)
{
    if (x.n_rows != size)
        return false;
    for (int i = 0; i < size; ++i)
        if (x(i) != y[i])
            return false;
    return true;
}

template<typename M, typename T, int rows, int cols>
bool _armadillo_fieldmatrix_compare(const M& x, const Dune::FieldMatrix<T, rows, cols>& y)
{
    if (x.n_rows != rows || x.n_cols != cols)
        return false;
    for (int j = 0; j < cols; ++j)
        for (int i = 0; i < rows; ++i)
            if (x(i,j) != y[i][j])
                return false;
    return true;
}

template <typename T, int size>
bool operator==(const arma::Col<T>& x, const Dune::FieldVector<T, size>& y)
{
    return _armadillo_fieldvector_compare(x, y);
}

template <typename T, int size>
bool operator==(const Dune::FieldVector<T, size>& x, const arma::Col<T>& y)
{
    return _armadillo_fieldvector_compare(y, x);
}

template <typename T, int size>
bool operator==(const arma::subview_col<T>& x, const Dune::FieldVector<T, size>& y)
{
    return _armadillo_fieldvector_compare(x, y);
}

template <typename T, int size>
bool operator==(const Dune::FieldVector<T, size>& x, const arma::subview_col<T>& y)
{
    return _armadillo_fieldvector_compare(y, x);
}

template <typename T, int rows, int cols>
bool operator==(const arma::Mat<T>& x, const Dune::FieldMatrix<T, rows, cols>& y)
{
    return _armadillo_fieldmatrix_compare(x, y);
}

template <typename T, int rows, int cols>
bool operator==(const Dune::FieldMatrix<T, rows, cols>& x, const arma::Mat<T>& y)
{
    return _armadillo_fieldmatrix_compare(y, x);
}


// For BOOST_CHECK_EQUAL to work, we need to copy these comparison operators
// to the boost::test_tools:tt_detail namespace...

namespace boost
{
namespace test_tools
{
namespace tt_detail
{

template <typename T, int size>
bool operator==(const ::arma::Col<T>& x, const ::Dune::FieldVector<T, size>& y)
{
    return ::operator==(x, y);
}

template <typename T, int size>
bool operator==(const ::Dune::FieldVector<T, size>& x, const ::arma::Col<T>& y)
{
    return ::operator==(x, y);
}

template <typename T, int size>
bool operator==(const arma::subview_col<T>& x, const Dune::FieldVector<T, size>& y)
{
    return ::operator==(x, y);
}

template <typename T, int size>
bool operator==(const Dune::FieldVector<T, size>& x, const arma::subview_col<T>& y)
{
    return ::operator==(x, y);
}

template <typename T, int rows, int cols>
bool operator==(const arma::Mat<T>& x, const Dune::FieldMatrix<T, rows, cols>& y)
{
    return ::operator==(x, y);
}

template <typename T, int rows, int cols>
bool operator==(const Dune::FieldMatrix<T, rows, cols>& x, const arma::Mat<T>& y)
{
    return ::operator==(x, y);
}

} // namespace tt_detail
} // namespace test_tools
} // namespace boost

#endif