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Diffstat (limited to 'src/armadillo/include/armadillo_bits/spop_repmat_meat.hpp')
| -rw-r--r-- | src/armadillo/include/armadillo_bits/spop_repmat_meat.hpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/spop_repmat_meat.hpp b/src/armadillo/include/armadillo_bits/spop_repmat_meat.hpp new file mode 100644 index 0000000..4c09a3e --- /dev/null +++ b/src/armadillo/include/armadillo_bits/spop_repmat_meat.hpp @@ -0,0 +1,166 @@ +// 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 spop_repmat +//! @{ + + + +template<typename T1> +inline +void +spop_repmat::apply(SpMat<typename T1::elem_type>& out, const SpOp<T1,spop_repmat>& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const unwrap_spmat<T1> U(X.m); + + if(U.is_alias(out)) + { + SpMat<eT> tmp; + + spop_repmat::apply_noalias(tmp, X.aux_uword_a, X.aux_uword_b, U.M); + + out.steal_mem(tmp); + } + else + { + spop_repmat::apply_noalias(out, X.aux_uword_a, X.aux_uword_b, U.M); + } + } + + + +template<typename eT> +inline +void +spop_repmat::apply_noalias(SpMat<eT>& out, const uword A_n_rows, const uword A_n_cols, const SpMat<eT>& B) + { + arma_extra_debug_sigprint(); + + const uword B_n_rows = B.n_rows; + const uword B_n_cols = B.n_cols; + + const uword out_n_nonzero = A_n_rows * A_n_cols * B.n_nonzero; + + out.reserve(A_n_rows * B_n_rows, A_n_cols * B_n_cols, out_n_nonzero); + + if(out_n_nonzero == 0) { return; } + + access::rw(out.col_ptrs[0]) = 0; + + uword count = 0; + + for(uword A_col=0; A_col < A_n_cols; ++A_col) + for(uword B_col=0; B_col < B_n_cols; ++B_col) + { + for(uword A_row=0; A_row < A_n_rows; ++A_row) + { + const uword out_row = A_row * B_n_rows; + + for(uword B_i = B.col_ptrs[B_col]; B_i < B.col_ptrs[B_col+1]; ++B_i) + { + access::rw(out.values[count]) = B.values[B_i]; + access::rw(out.row_indices[count]) = out_row + B.row_indices[B_i]; + + count++; + } + } + + access::rw(out.col_ptrs[A_col * B_n_cols + B_col + 1]) = count; + } + } + + + +// template<typename T1> +// inline +// void +// spop_repmat::apply(SpMat<typename T1::elem_type>& out, const SpOp<T1, spop_repmat>& in) +// { +// arma_extra_debug_sigprint(); +// +// typedef typename T1::elem_type eT; +// +// const unwrap_spmat<T1> U(in.m); +// const SpMat<eT>& X = U.M; +// +// const uword X_n_rows = X.n_rows; +// const uword X_n_cols = X.n_cols; +// +// const uword copies_per_row = in.aux_uword_a; +// const uword copies_per_col = in.aux_uword_b; +// +// // out.set_size(X_n_rows * copies_per_row, X_n_cols * copies_per_col); +// // +// // const uword out_n_rows = out.n_rows; +// // const uword out_n_cols = out.n_cols; +// // +// // if( (out_n_rows > 0) && (out_n_cols > 0) ) +// // { +// // for(uword col = 0; col < out_n_cols; col += X_n_cols) +// // for(uword row = 0; row < out_n_rows; row += X_n_rows) +// // { +// // out.submat(row, col, row+X_n_rows-1, col+X_n_cols-1) = X; +// // } +// // } +// +// const uword out_n_rows = X_n_rows * copies_per_row; +// const uword out_n_cols = X_n_cols * copies_per_col; +// const uword out_nnz = X.n_nonzero * copies_per_row * copies_per_col; +// +// if( (out_n_rows > 0) && (out_n_cols > 0) && (out_nnz > 0) ) +// { +// umat locs(2, out_nnz, arma_nozeros_indicator()); +// Col<eT> vals( out_nnz, arma_nozeros_indicator()); +// +// uword* locs_mem = locs.memptr(); +// eT* vals_mem = vals.memptr(); +// +// typename SpMat<eT>::const_iterator X_begin = X.begin(); +// typename SpMat<eT>::const_iterator X_end = X.end(); +// typename SpMat<eT>::const_iterator X_it; +// +// for(uword col_offset = 0; col_offset < out_n_cols; col_offset += X_n_cols) +// for(uword row_offset = 0; row_offset < out_n_rows; row_offset += X_n_rows) +// { +// for(X_it = X_begin; X_it != X_end; ++X_it) +// { +// const uword out_row = row_offset + X_it.row(); +// const uword out_col = col_offset + X_it.col(); +// +// (*locs_mem) = out_row; ++locs_mem; +// (*locs_mem) = out_col; ++locs_mem; +// +// (*vals_mem) = (*X_it); ++vals_mem; +// } +// } +// +// out = SpMat<eT>(locs, vals, out_n_rows, out_n_cols); +// } +// else +// { +// out.zeros(out_n_rows, out_n_cols); +// } +// } + + + +//! @} |