Block.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2014 Soumyajit De
 * Written (w) 2014 Khaled Nasr
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 */

#ifndef BLOCK_H_
#define BLOCK_H_

#include <shogun/lib/config.h>

namespace shogun
{

namespace linalg
{

template <class Matrix>
struct Block
{
    typedef typename Matrix::Scalar Scalar;

    Block<Matrix>(Matrix matrix,
            index_t row_begin, index_t col_begin,
            index_t row_size, index_t col_size)
        : m_matrix(matrix), m_row_begin(row_begin), m_col_begin(col_begin),
        m_row_size(row_size), m_col_size(col_size)
    {
    }

    Matrix m_matrix;

    index_t m_row_begin;

    index_t m_col_begin;

    index_t m_row_size;

    index_t m_col_size;
};

template <class Matrix>
Block<Matrix> block(Matrix matrix, index_t row_begin,
        index_t col_begin, index_t row_size, index_t col_size)
{
    return Block<Matrix>(matrix, row_begin, col_begin, row_size, col_size);
}

}

}
#endif // BLOCK_H_