make_alias.hpp

Go to the documentation of this file.

#ifndef MLPACK_CORE_MATH_MAKE_ALIAS_HPP
#define MLPACK_CORE_MATH_MAKE_ALIAS_HPP

namespace mlpack {
namespace math {

template<typename ElemType>
arma::Cube MakeAlias(arma::Cube& input,
                               const bool strict = true)
{
  // Use the advanced constructor.
  return arma::Cube(input.memptr(), input.n_rows, input.n_cols,
      input.n_slices, false, strict);
}

template<typename ElemType>
arma::Mat MakeAlias(arma::Mat& input,
                              const bool strict = true)
{
  // Use the advanced constructor.
  return arma::Mat(input.memptr(), input.n_rows, input.n_cols, false,
      strict);
}

template<typename ElemType>
arma::Row MakeAlias(arma::Row& input,
                              const bool strict = true)
{
  // Use the advanced constructor.
  return arma::Row(input.memptr(), input.n_elem, false, strict);
}

template<typename ElemType>
arma::Col MakeAlias(arma::Col& input,
                              const bool strict = true)
{
  // Use the advanced constructor.
  return arma::Col(input.memptr(), input.n_elem, false, strict);
}

template<typename ElemType>
arma::SpMat MakeAlias(const arma::SpMat& input,
                                const bool /* strict */ = true)
{
  // Make a copy...
  return arma::SpMat(input);
}

template<typename ElemType>
arma::SpRow MakeAlias(const arma::SpRow& input,
                                const bool /* strict */ = true)
{
  // Make a copy...
  return arma::SpRow(input);
}

template<typename ElemType>
arma::SpCol MakeAlias(const arma::SpCol& input,
                                const bool /* strict */ = true)
{
  // Make a copy...
  return arma::SpCol(input);
}

template<typename ElemType>
void ClearAlias(arma::Mat& mat)
{
  if (mat.mem_state >= 1)
    mat.reset();
}

template<typename ElemType>
void ClearAlias(arma::SpMat& /* mat */)
{
  // Nothing to do.
}


} // namespace math
} // namespace mlpack

#endif