98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 2008-2016 Conrad Sanderson (https://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup glue_polyval
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//! @{
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template<typename eT>
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inline
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void
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glue_polyval::apply_noalias(Mat<eT>& out, const Mat<eT>& P, const Mat<eT>& X)
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{
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arma_debug_sigprint();
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out.set_size(X.n_rows, X.n_cols);
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const eT* P_mem = P.memptr();
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const uword P_n_elem = P.n_elem;
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out.fill(P_mem[0]);
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for(uword i=1; i < P_n_elem; ++i)
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{
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out = out % X + P_mem[i];
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}
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}
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template<typename T1, typename T2>
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inline
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void
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glue_polyval::apply(Mat<typename T1::elem_type>& out, const Glue<T1,T2,glue_polyval>& expr)
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{
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arma_debug_sigprint();
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typedef typename T1::elem_type eT;
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const quasi_unwrap<T1> UP(expr.A);
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const quasi_unwrap<T2> UX(expr.B);
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arma_conform_check( ((UP.M.is_vec() == false) && (UP.M.is_empty() == false)), "polyval(): argument P must be a vector" );
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if(UP.M.is_empty() || UX.M.is_empty()) { out.zeros(UX.M.n_rows, UX.M.n_cols); return; }
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if(UP.is_alias(out) || UX.is_alias(out))
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{
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Mat<eT> tmp;
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glue_polyval::apply_noalias(tmp, UP.M, UX.M);
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out.steal_mem(tmp);
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}
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else
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{
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glue_polyval::apply_noalias(out, UP.M, UX.M);
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}
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}
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template<typename T1, typename T2>
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inline
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void
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glue_polyval::apply(Mat_noalias<typename T1::elem_type>& out, const Glue<T1,T2,glue_polyval>& expr)
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{
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arma_debug_sigprint();
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const quasi_unwrap<T1> UP(expr.A);
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const quasi_unwrap<T2> UX(expr.B);
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arma_conform_check( ((UP.M.is_vec() == false) && (UP.M.is_empty() == false)), "polyval(): argument P must be a vector" );
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if(UP.M.is_empty() || UX.M.is_empty()) { out.zeros(UX.M.n_rows, UX.M.n_cols); return; }
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glue_polyval::apply_noalias(out, UP.M, UX.M);
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}
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//! @}
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