378 lines
7.7 KiB
C++
378 lines
7.7 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 2008-2016 Conrad Sanderson (http://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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// http://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 op_sum
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//! @{
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_sum>& in)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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const uword dim = in.aux_uword_a;
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arma_debug_check( (dim > 1), "sum(): parameter 'dim' must be 0 or 1" );
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const Proxy<T1> P(in.m);
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if(P.is_alias(out) == false)
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{
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op_sum::apply_noalias(out, P, dim);
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}
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else
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{
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Mat<eT> tmp;
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op_sum::apply_noalias(tmp, P, dim);
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out.steal_mem(tmp);
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias(Mat<typename T1::elem_type>& out, const Proxy<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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if(is_Mat<typename Proxy<T1>::stored_type>::value || (arma_config::openmp && Proxy<T1>::use_mp))
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{
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op_sum::apply_noalias_unwrap(out, P, dim);
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}
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else
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{
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op_sum::apply_noalias_proxy(out, P, dim);
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias_unwrap(Mat<typename T1::elem_type>& out, const Proxy<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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typedef typename Proxy<T1>::stored_type P_stored_type;
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const unwrap<P_stored_type> tmp(P.Q);
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const typename unwrap<P_stored_type>::stored_type& X = tmp.M;
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const uword X_n_rows = X.n_rows;
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const uword X_n_cols = X.n_cols;
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if(dim == 0)
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{
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out.set_size(1, X_n_cols);
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eT* out_mem = out.memptr();
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for(uword col=0; col < X_n_cols; ++col)
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{
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out_mem[col] = arrayops::accumulate( X.colptr(col), X_n_rows );
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}
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}
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else
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{
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out.zeros(X_n_rows, 1);
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eT* out_mem = out.memptr();
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for(uword col=0; col < X_n_cols; ++col)
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{
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arrayops::inplace_plus( out_mem, X.colptr(col), X_n_rows );
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}
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias_proxy(Mat<typename T1::elem_type>& out, const Proxy<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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const uword P_n_rows = P.get_n_rows();
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const uword P_n_cols = P.get_n_cols();
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if(dim == 0)
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{
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out.set_size(1, P_n_cols);
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eT* out_mem = out.memptr();
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for(uword col=0; col < P_n_cols; ++col)
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{
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eT val1 = eT(0);
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eT val2 = eT(0);
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uword i,j;
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for(i=0, j=1; j < P_n_rows; i+=2, j+=2)
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{
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val1 += P.at(i,col);
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val2 += P.at(j,col);
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}
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if(i < P_n_rows)
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{
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val1 += P.at(i,col);
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}
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out_mem[col] = (val1 + val2);
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}
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}
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else
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{
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out.zeros(P_n_rows, 1);
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eT* out_mem = out.memptr();
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for(uword col=0; col < P_n_cols; ++col)
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for(uword row=0; row < P_n_rows; ++row)
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{
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out_mem[row] += P.at(row,col);
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}
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}
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}
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//
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// cubes
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply(Cube<typename T1::elem_type>& out, const OpCube<T1,op_sum>& in)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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const uword dim = in.aux_uword_a;
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arma_debug_check( (dim > 2), "sum(): parameter 'dim' must be 0 or 1 or 2" );
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const ProxyCube<T1> P(in.m);
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if(P.is_alias(out) == false)
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{
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op_sum::apply_noalias(out, P, dim);
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}
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else
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{
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Cube<eT> tmp;
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op_sum::apply_noalias(tmp, P, dim);
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out.steal_mem(tmp);
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias(Cube<typename T1::elem_type>& out, const ProxyCube<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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if(is_Cube<typename ProxyCube<T1>::stored_type>::value || (arma_config::openmp && ProxyCube<T1>::use_mp))
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{
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op_sum::apply_noalias_unwrap(out, P, dim);
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}
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else
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{
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op_sum::apply_noalias_proxy(out, P, dim);
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias_unwrap(Cube<typename T1::elem_type>& out, const ProxyCube<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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typedef typename ProxyCube<T1>::stored_type P_stored_type;
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const unwrap_cube<P_stored_type> tmp(P.Q);
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const Cube<eT>& X = tmp.M;
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const uword X_n_rows = X.n_rows;
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const uword X_n_cols = X.n_cols;
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const uword X_n_slices = X.n_slices;
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if(dim == 0)
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{
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out.set_size(1, X_n_cols, X_n_slices);
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for(uword slice=0; slice < X_n_slices; ++slice)
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{
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eT* out_mem = out.slice_memptr(slice);
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for(uword col=0; col < X_n_cols; ++col)
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{
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out_mem[col] = arrayops::accumulate( X.slice_colptr(slice,col), X_n_rows );
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}
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}
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}
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else
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if(dim == 1)
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{
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out.zeros(X_n_rows, 1, X_n_slices);
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for(uword slice=0; slice < X_n_slices; ++slice)
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{
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eT* out_mem = out.slice_memptr(slice);
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for(uword col=0; col < X_n_cols; ++col)
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{
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arrayops::inplace_plus( out_mem, X.slice_colptr(slice,col), X_n_rows );
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}
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}
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}
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else
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if(dim == 2)
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{
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out.zeros(X_n_rows, X_n_cols, 1);
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eT* out_mem = out.memptr();
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for(uword slice=0; slice < X_n_slices; ++slice)
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{
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arrayops::inplace_plus(out_mem, X.slice_memptr(slice), X.n_elem_slice );
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}
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}
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}
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template<typename T1>
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arma_hot
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inline
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void
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op_sum::apply_noalias_proxy(Cube<typename T1::elem_type>& out, const ProxyCube<T1>& P, const uword dim)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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const uword P_n_rows = P.get_n_rows();
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const uword P_n_cols = P.get_n_cols();
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const uword P_n_slices = P.get_n_slices();
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if(dim == 0)
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{
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out.set_size(1, P_n_cols, P_n_slices);
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for(uword slice=0; slice < P_n_slices; ++slice)
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{
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eT* out_mem = out.slice_memptr(slice);
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for(uword col=0; col < P_n_cols; ++col)
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{
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eT val1 = eT(0);
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eT val2 = eT(0);
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uword i,j;
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for(i=0, j=1; j < P_n_rows; i+=2, j+=2)
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{
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val1 += P.at(i,col,slice);
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val2 += P.at(j,col,slice);
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}
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if(i < P_n_rows)
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{
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val1 += P.at(i,col,slice);
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}
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out_mem[col] = (val1 + val2);
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}
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}
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}
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else
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if(dim == 1)
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{
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out.zeros(P_n_rows, 1, P_n_slices);
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for(uword slice=0; slice < P_n_slices; ++slice)
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{
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eT* out_mem = out.slice_memptr(slice);
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for(uword col=0; col < P_n_cols; ++col)
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for(uword row=0; row < P_n_rows; ++row)
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{
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out_mem[row] += P.at(row,col,slice);
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}
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}
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}
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else
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if(dim == 2)
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{
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out.zeros(P_n_rows, P_n_cols, 1);
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for(uword slice=0; slice < P_n_slices; ++slice)
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{
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for(uword col=0; col < P_n_cols; ++col)
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{
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eT* out_mem = out.slice_colptr(0,col);
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for(uword row=0; row < P_n_rows; ++row)
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{
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out_mem[row] += P.at(row,col,slice);
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}
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}
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}
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}
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}
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//! @}
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