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armadillo-code/include/armadillo_bits/fn_kron.hpp
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// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------
//! \addtogroup fn_kron
//! @{
template<typename T1, typename T2>
arma_warn_unused
arma_inline
const Glue<T1,T2,glue_kron>
kron(const Base<typename T1::elem_type,T1>& A, const Base<typename T1::elem_type,T2>& B)
{
arma_debug_sigprint();
return Glue<T1, T2, glue_kron>(A.get_ref(), B.get_ref());
}
template<typename T, typename T1, typename T2>
arma_warn_unused
inline
Mat<typename eT_promoter<T1,T2>::eT>
kron(const Base<std::complex<T>,T1>& X, const Base<T,T2>& Y)
{
arma_debug_sigprint();
typedef typename std::complex<T> eT1;
promote_type<eT1,T>::check();
const quasi_unwrap<T1> tmp1(X.get_ref());
const quasi_unwrap<T2> tmp2(Y.get_ref());
const Mat<eT1>& A = tmp1.M;
const Mat<T >& B = tmp2.M;
Mat<eT1> out;
glue_kron::direct_kron(out, A, B);
return out;
}
template<typename T, typename T1, typename T2>
arma_warn_unused
inline
Mat<typename eT_promoter<T1,T2>::eT>
kron(const Base<T,T1>& X, const Base<std::complex<T>,T2>& Y)
{
arma_debug_sigprint();
typedef typename std::complex<T> eT2;
promote_type<T,eT2>::check();
const quasi_unwrap<T1> tmp1(X.get_ref());
const quasi_unwrap<T2> tmp2(Y.get_ref());
const Mat<T >& A = tmp1.M;
const Mat<eT2>& B = tmp2.M;
Mat<eT2> out;
glue_kron::direct_kron(out, A, B);
return out;
}
template<typename T1, typename T2>
arma_warn_unused
arma_inline
const SpGlue<T1, T2, spglue_kron>
kron(const SpBase<typename T1::elem_type,T1>& A, const SpBase<typename T1::elem_type,T2>& B)
{
arma_debug_sigprint();
return SpGlue<T1, T2, spglue_kron>(A.get_ref(), B.get_ref());
}
//! @}