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