Chris@49: // Copyright (C) 2009-2010 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2009-2010 Conrad Sanderson
Chris@49: // Copyright (C) 2009-2010 Dimitrios Bouzas
Chris@49: // 
Chris@49: // This Source Code Form is subject to the terms of the Mozilla Public
Chris@49: // License, v. 2.0. If a copy of the MPL was not distributed with this
Chris@49: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
Chris@49: 
Chris@49: 
Chris@49: //! \addtogroup fn_kron
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! \brief
Chris@49: //! kronecker product of two matrices,
Chris@49: //! with the matrices having the same element type
Chris@49: template<typename T1, typename T2>
Chris@49: arma_inline
Chris@49: const Glue<T1,T2,glue_kron>
Chris@49: kron(const Base<typename T1::elem_type,T1>& A, const Base<typename T1::elem_type,T2>& B)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49: 
Chris@49:   return Glue<T1, T2, glue_kron>(A.get_ref(), B.get_ref());
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! \brief
Chris@49: //! kronecker product of two matrices,
Chris@49: //! with the matrices having different element types
Chris@49: template<typename T, typename T1, typename T2>
Chris@49: inline
Chris@49: Mat<typename eT_promoter<T1,T2>::eT>
Chris@49: kron(const Base<std::complex<T>,T1>& X, const Base<T,T2>& Y)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49: 
Chris@49:   typedef typename std::complex<T> eT1;
Chris@49: 
Chris@49:   promote_type<eT1,T>::check();
Chris@49:   
Chris@49:   const unwrap<T1> tmp1(X.get_ref());
Chris@49:   const unwrap<T2> tmp2(Y.get_ref());
Chris@49:   
Chris@49:   const Mat<eT1>& A = tmp1.M;
Chris@49:   const Mat<T  >& B = tmp2.M;
Chris@49: 
Chris@49:   Mat<eT1> out;
Chris@49:   
Chris@49:   glue_kron::direct_kron(out, A, B);
Chris@49:   
Chris@49:   return out;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! \brief
Chris@49: //! kronecker product of two matrices,
Chris@49: //! with the matrices having different element types
Chris@49: template<typename T, typename T1, typename T2>
Chris@49: inline
Chris@49: Mat<typename eT_promoter<T1,T2>::eT>
Chris@49: kron(const Base<T,T1>& X, const Base<std::complex<T>,T2>& Y)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49: 
Chris@49:   typedef typename std::complex<T> eT2;  
Chris@49: 
Chris@49:   promote_type<T,eT2>::check();
Chris@49:   
Chris@49:   const unwrap<T1> tmp1(X.get_ref());
Chris@49:   const unwrap<T2> tmp2(Y.get_ref());
Chris@49:   
Chris@49:   const Mat<T  >& A = tmp1.M;
Chris@49:   const Mat<eT2>& B = tmp2.M;
Chris@49: 
Chris@49:   Mat<eT2> out;
Chris@49:   
Chris@49:   glue_kron::direct_kron(out, A, B);
Chris@49:   
Chris@49:   return out;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}