comparison armadillo-2.4.4/include/armadillo_bits/fn_conv_to.hpp @ 0:8b6102e2a9b0

Armadillo Library

+// Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2008-2010 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+//! \addtogroup fn_conv_to
+//! @{
+
+
+
+//! conversion from Armadillo Base and BaseCube objects to scalars
+//! (kept only for compatibility with old code; use as_scalar() instead for Base objects like Mat)
+template<typename out_eT>
+class conv_to
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static out_eT from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+
+  template<typename in_eT, typename T1>
+  inline static out_eT from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static out_eT from(const BaseCube<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static out_eT from(const BaseCube<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+out_eT
+conv_to<out_eT>::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  arma_type_check(( is_supported_elem_type<out_eT>::value == false ));
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.n_elem != 1), "conv_to(): given object doesn't have exactly one element" );
+  
+  return out_eT(X.mem[0]);
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+out_eT
+conv_to<out_eT>::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  arma_type_check(( is_supported_elem_type<out_eT>::value == false ));
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.n_elem != 1), "conv_to(): given object doesn't have exactly one element" );
+  
+  out_eT out;
+  
+  arrayops::convert_cx_scalar(out, X.mem[0]);
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+out_eT
+conv_to<out_eT>::from(const BaseCube<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  arma_type_check(( is_supported_elem_type<out_eT>::value == false ));
+  
+  const unwrap_cube<T1>  tmp(in.get_ref());
+  const Cube<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.n_elem != 1), "conv_to(): given object doesn't have exactly one element" );
+  
+  return out_eT(X.mem[0]);
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+out_eT
+conv_to<out_eT>::from(const BaseCube<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  arma_type_check(( is_supported_elem_type<out_eT>::value == false ));
+  
+  const unwrap_cube<T1>  tmp(in.get_ref());
+  const Cube<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.n_elem != 1), "conv_to(): given object doesn't have exactly one element" );
+  
+  out_eT out;
+  
+  arrayops::convert_cx_scalar(out, X.mem[0]);
+  
+  return out;
+  }
+
+
+
+//! conversion to Armadillo matrices from Armadillo Base objects,
+//! as well as from std::vector, itpp::Mat and itpp::Vec
+template<typename out_eT>
+class conv_to< Mat<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static Mat<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static Mat<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Mat<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  Mat<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  Mat<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert_cx( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.size(), 1);
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Mat<out_eT>::iterator out_begin = out.begin();
+  typename Mat<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Mat<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+    (*out_it) = out_eT(*in_it);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.size(), 1);
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Mat<out_eT>::iterator out_begin = out.begin();
+  typename Mat<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Mat<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+          out_eT& out_elem = (*out_it);
+    const in_eT&  in_elem  = (*in_it);
+    
+    arrayops::convert_cx_scalar(out_elem, in_elem);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.rows(), in.cols());
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.rows(), in.cols());
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.length(), 1);
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Mat<out_eT>
+conv_to< Mat<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Mat<out_eT> out(in.length(), 1);
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+//! conversion to Armadillo row vectors from Armadillo Base objects,
+//! as well as from std::vector, itpp::Mat and itpp::Vec
+template<typename out_eT>
+class conv_to< Row<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static Row<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static Row<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Row<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Row<out_eT> out(X.n_elem);
+  
+  arrayops::convert( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Row<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert_cx( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Row<out_eT> out( in.size() );
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Row<out_eT>::iterator out_begin = out.begin();
+  typename Row<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Row<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+    (*out_it) = out_eT(*in_it);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Row<out_eT> out( in.size() );
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Row<out_eT>::iterator out_begin = out.begin();
+  typename Row<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Row<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+          out_eT& out_elem = (*out_it);
+    const in_eT&  in_elem  = (*in_it);
+    
+    arrayops::convert_cx_scalar(out_elem, in_elem);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const bool is_vec = ( (in.rows() == 1) || (in.cols() == 1) );
+  
+  arma_debug_check( (is_vec == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Row<out_eT> out(in.rows() * in.cols());
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  //const bool is_vec = ( (in.rows() == 1) || (in.cols() == 1) );
+  
+  Row<out_eT> out(in.rows() * in.cols());
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Row<out_eT> out(in.length());
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Row<out_eT>
+conv_to< Row<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Row<out_eT> out(in.length());
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+//! conversion to Armadillo column vectors from Armadillo Base objects,
+//! as well as from std::vector, itpp::Mat and itpp::Vec
+template<typename out_eT>
+class conv_to< Col<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static Col<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static Col<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  
+  
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT>
+  inline static Col<out_eT> from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Col<out_eT> out(X.n_elem);
+  
+  arrayops::convert( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Col<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert_cx( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Col<out_eT> out( in.size() );
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Col<out_eT>::iterator out_begin = out.begin();
+  typename Col<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Col<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+    (*out_it) = out_eT(*in_it);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const std::vector<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Col<out_eT> out( in.size() );
+  
+  typename std::vector<in_eT>::const_iterator in_begin = in.begin();
+  typename std::vector<in_eT>::const_iterator in_end   = in.end();
+  
+  typename Col<out_eT>::iterator out_begin = out.begin();
+  typename Col<out_eT>::iterator out_end   = out.end();
+  
+  typename std::vector<in_eT>::const_iterator in_it;
+  typename Col<out_eT>::iterator              out_it;
+  
+  for(in_it = in_begin, out_it = out_begin; (in_it != in_end) && (out_it != out_end); ++in_it, ++out_it)
+    {
+          out_eT& out_elem = (*out_it);
+    const in_eT&  in_elem  = (*in_it);
+    
+    arrayops::convert_cx_scalar(out_elem, in_elem);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const bool is_vec = ( (in.rows() == 1) || (in.cols() == 1) );
+  
+  arma_debug_check( (is_vec == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  Col<out_eT> out(in.rows() * in.cols());
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const itpp::Mat<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  //const bool is_vec = ( (in.rows() == 1) || (in.cols() == 1) );
+  
+  Col<out_eT> out(in.rows() * in.cols());
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Col<out_eT> out( in.length() );
+  
+  arrayops::convert( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT>
+inline
+Col<out_eT>
+conv_to< Col<out_eT> >::from(const itpp::Vec<in_eT>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  Col<out_eT> out( in.length() );
+  
+  arrayops::convert_cx( out.memptr(), in._data(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+//! conversion to Armadillo cubes from Armadillo BaseCube objects
+template<typename out_eT>
+class conv_to< Cube<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static Cube<out_eT> from(const BaseCube<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static Cube<out_eT> from(const BaseCube<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Cube<out_eT>
+conv_to< Cube<out_eT> >::from(const BaseCube<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap_cube<T1>  tmp( in.get_ref() );
+  const Cube<in_eT>& X = tmp.M;
+  
+  Cube<out_eT> out(X.n_rows, X.n_cols, X.n_slices);
+  
+  arrayops::convert( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+Cube<out_eT>
+conv_to< Cube<out_eT> >::from(const BaseCube<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap_cube<T1>  tmp( in.get_ref() );
+  const Cube<in_eT>& X = tmp.M;
+  
+  Cube<out_eT> out(X.n_rows, X.n_cols, X.n_slices);
+  
+  arrayops::convert_cx( out.memptr(), X.memptr(), out.n_elem );
+  
+  return out;
+  }
+
+
+
+//! conversion to std::vector from Armadillo Base objects
+template<typename out_eT>
+class conv_to< std::vector<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static std::vector<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static std::vector<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+std::vector<out_eT>
+conv_to< std::vector<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  std::vector<out_eT> out(X.n_elem);
+  
+  typename Mat<in_eT>::const_iterator X_begin = X.begin();
+  typename Mat<in_eT>::const_iterator X_end   = X.end();
+
+  typename std::vector<out_eT>::iterator out_begin = out.begin();
+  typename std::vector<out_eT>::iterator out_end   = out.end();
+  
+  typename Mat<in_eT>::const_iterator    X_it;
+  typename std::vector<out_eT>::iterator out_it;
+  
+  for(X_it = X_begin, out_it = out_begin; (X_it != X_end) && (out_it != out_end); ++X_it, ++out_it)
+    {
+    (*out_it) = out_eT(*X_it);
+    }
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+std::vector<out_eT>
+conv_to< std::vector<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp(in.get_ref());
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  std::vector<out_eT> out(X.n_elem);
+  
+  typename Mat<in_eT>::const_iterator X_begin = X.begin();
+  typename Mat<in_eT>::const_iterator X_end   = X.end();
+
+  typename std::vector<out_eT>::iterator out_begin = out.begin();
+  typename std::vector<out_eT>::iterator out_end   = out.end();
+  
+  typename Mat<in_eT>::const_iterator    X_it;
+  typename std::vector<out_eT>::iterator out_it;
+  
+  for(X_it = X_begin, out_it = out_begin; (X_it != X_end) && (out_it != out_end); ++X_it, ++out_it)
+    {
+          out_eT& out_elem = (*out_it);
+    const in_eT&  X_elem   = (*X_it);
+    
+    arrayops::convert_cx_scalar(out_elem, X_elem);
+    }
+  
+  return out;
+  }
+
+
+
+//! conversion to itpp::Mat from Armadillo Base objects
+template<typename out_eT>
+class conv_to< itpp::Mat<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static itpp::Mat<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static itpp::Mat<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+itpp::Mat<out_eT>
+conv_to< itpp::Mat<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp( in.get_ref() );
+  const Mat<in_eT>& X = tmp.M;
+  
+  itpp::Mat<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert( out._data(), X.memptr(), X.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+itpp::Mat<out_eT>
+conv_to< itpp::Mat<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp( in.get_ref() );
+  const Mat<in_eT>& X = tmp.M;
+  
+  itpp::Mat<out_eT> out(X.n_rows, X.n_cols);
+  
+  arrayops::convert_cx( out._data(), X.memptr(), X.n_elem );
+  
+  return out;
+  }
+
+
+
+
+//! conversion to itpp::Vec from Armadillo Base objects
+template<typename out_eT>
+class conv_to< itpp::Vec<out_eT> >
+  {
+  public:
+  
+  template<typename in_eT, typename T1>
+  inline static itpp::Vec<out_eT> from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk = 0);
+  
+  template<typename in_eT, typename T1>
+  inline static itpp::Vec<out_eT> from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk = 0);
+  };
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+itpp::Vec<out_eT>
+conv_to< itpp::Vec<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_not_cx<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp( in.get_ref() );
+  const Mat<in_eT>& X = tmp.M;
+  
+  arma_debug_check( (X.is_vec() == false), "conv_to(): given object can't be interpreted as a vector" );
+  
+  itpp::Vec<out_eT> out(X.n_elem);
+  
+  arrayops::convert( out._data(), X.memptr(), X.n_elem );
+  
+  return out;
+  }
+
+
+
+template<typename out_eT>
+template<typename in_eT, typename T1>
+inline
+itpp::Vec<out_eT>
+conv_to< itpp::Vec<out_eT> >::from(const Base<in_eT, T1>& in, const typename arma_cx_only<in_eT>::result* junk)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(junk);
+  
+  const unwrap<T1>      tmp( in.get_ref() );
+  const Mat<in_eT>& X = tmp.M;
+  
+  itpp::Vec<out_eT> out(X.n_elem);
+  
+  arrayops::convert_cx( out._data(), X.memptr(), X.n_elem );
+  
+  return out;
+  }
+
+
+
+//! @}