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Diffstat (limited to 'src/armadillo/include/armadillo_bits/spglue_join_meat.hpp')
| -rw-r--r-- | src/armadillo/include/armadillo_bits/spglue_join_meat.hpp | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/spglue_join_meat.hpp b/src/armadillo/include/armadillo_bits/spglue_join_meat.hpp new file mode 100644 index 0000000..4a3e244 --- /dev/null +++ b/src/armadillo/include/armadillo_bits/spglue_join_meat.hpp @@ -0,0 +1,350 @@ +// 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 spglue_join +//! @{ + + + +template<typename T1, typename T2> +inline +void +spglue_join_cols::apply(SpMat<typename T1::elem_type>& out, const SpGlue<T1,T2,spglue_join_cols>& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const unwrap_spmat<T1> UA(X.A); + const unwrap_spmat<T2> UB(X.B); + + if(UA.is_alias(out) || UB.is_alias(out)) + { + SpMat<eT> tmp; + + spglue_join_cols::apply_noalias(tmp, UA.M, UB.M); + + out.steal_mem(tmp); + } + else + { + spglue_join_cols::apply_noalias(out, UA.M, UB.M); + } + } + + + +template<typename eT> +inline +void +spglue_join_cols::apply_noalias(SpMat<eT>& out, const SpMat<eT>& A, const SpMat<eT>& B) + { + arma_extra_debug_sigprint(); + + const uword A_n_rows = A.n_rows; + const uword A_n_cols = A.n_cols; + + const uword B_n_rows = B.n_rows; + const uword B_n_cols = B.n_cols; + + arma_debug_check + ( + ( (A_n_cols != B_n_cols) && ( (A_n_rows > 0) || (A_n_cols > 0) ) && ( (B_n_rows > 0) || (B_n_cols > 0) ) ), + "join_cols() / join_vert(): number of columns must be the same" + ); + + out.set_size( A_n_rows + B_n_rows, (std::max)(A_n_cols, B_n_cols) ); + + if( out.n_elem > 0 ) + { + if(A.is_empty() == false) + { + out.submat(0, 0, A_n_rows-1, out.n_cols-1) = A; + } + + if(B.is_empty() == false) + { + out.submat(A_n_rows, 0, out.n_rows-1, out.n_cols-1) = B; + } + } + } + + + +template<typename eT, typename T1, typename T2, typename T3> +inline +void +spglue_join_cols::apply(SpMat<eT>& out, const SpBase<eT,T1>& A_expr, const SpBase<eT,T2>& B_expr, const SpBase<eT,T3>& C_expr) + { + arma_extra_debug_sigprint(); + + const unwrap_spmat<T1> UA(A_expr.get_ref()); + const unwrap_spmat<T2> UB(B_expr.get_ref()); + const unwrap_spmat<T3> UC(C_expr.get_ref()); + + const SpMat<eT>& A = UA.M; + const SpMat<eT>& B = UB.M; + const SpMat<eT>& C = UC.M; + + const uword out_n_rows = A.n_rows + B.n_rows + C.n_rows; + const uword out_n_cols = (std::max)((std::max)(A.n_cols, B.n_cols), C.n_cols); + + arma_debug_check( ((A.n_cols != out_n_cols) && ((A.n_rows > 0) || (A.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + arma_debug_check( ((B.n_cols != out_n_cols) && ((B.n_rows > 0) || (B.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + arma_debug_check( ((C.n_cols != out_n_cols) && ((C.n_rows > 0) || (C.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + + out.set_size(out_n_rows, out_n_cols); + + if(out.n_elem == 0) { return; } + + uword row_start = 0; + uword row_end_p1 = 0; + + if(A.n_elem > 0) { row_end_p1 += A.n_rows; out.rows(row_start, row_end_p1 - 1) = A; } + + row_start = row_end_p1; + + if(B.n_elem > 0) { row_end_p1 += B.n_rows; out.rows(row_start, row_end_p1 - 1) = B; } + + row_start = row_end_p1; + + if(C.n_elem > 0) { row_end_p1 += C.n_rows; out.rows(row_start, row_end_p1 - 1) = C; } + } + + + +template<typename eT, typename T1, typename T2, typename T3, typename T4> +inline +void +spglue_join_cols::apply(SpMat<eT>& out, const SpBase<eT,T1>& A_expr, const SpBase<eT,T2>& B_expr, const SpBase<eT,T3>& C_expr, const SpBase<eT,T4>& D_expr) + { + arma_extra_debug_sigprint(); + + const unwrap_spmat<T1> UA(A_expr.get_ref()); + const unwrap_spmat<T2> UB(B_expr.get_ref()); + const unwrap_spmat<T3> UC(C_expr.get_ref()); + const unwrap_spmat<T4> UD(D_expr.get_ref()); + + const SpMat<eT>& A = UA.M; + const SpMat<eT>& B = UB.M; + const SpMat<eT>& C = UC.M; + const SpMat<eT>& D = UD.M; + + const uword out_n_rows = A.n_rows + B.n_rows + C.n_rows + D.n_rows; + const uword out_n_cols = (std::max)(((std::max)((std::max)(A.n_cols, B.n_cols), C.n_cols)), D.n_cols); + + arma_debug_check( ((A.n_cols != out_n_cols) && ((A.n_rows > 0) || (A.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + arma_debug_check( ((B.n_cols != out_n_cols) && ((B.n_rows > 0) || (B.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + arma_debug_check( ((C.n_cols != out_n_cols) && ((C.n_rows > 0) || (C.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + arma_debug_check( ((D.n_cols != out_n_cols) && ((D.n_rows > 0) || (D.n_cols > 0))), "join_cols() / join_vert(): number of columns must be the same" ); + + out.set_size(out_n_rows, out_n_cols); + + if(out.n_elem == 0) { return; } + + uword row_start = 0; + uword row_end_p1 = 0; + + if(A.n_elem > 0) { row_end_p1 += A.n_rows; out.rows(row_start, row_end_p1 - 1) = A; } + + row_start = row_end_p1; + + if(B.n_elem > 0) { row_end_p1 += B.n_rows; out.rows(row_start, row_end_p1 - 1) = B; } + + row_start = row_end_p1; + + if(C.n_elem > 0) { row_end_p1 += C.n_rows; out.rows(row_start, row_end_p1 - 1) = C; } + + row_start = row_end_p1; + + if(D.n_elem > 0) { row_end_p1 += D.n_rows; out.rows(row_start, row_end_p1 - 1) = D; } + } + + + +template<typename T1, typename T2> +inline +void +spglue_join_rows::apply(SpMat<typename T1::elem_type>& out, const SpGlue<T1,T2,spglue_join_rows>& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const unwrap_spmat<T1> UA(X.A); + const unwrap_spmat<T2> UB(X.B); + + if(UA.is_alias(out) || UB.is_alias(out)) + { + SpMat<eT> tmp; + + spglue_join_rows::apply_noalias(tmp, UA.M, UB.M); + + out.steal_mem(tmp); + } + else + { + spglue_join_rows::apply_noalias(out, UA.M, UB.M); + } + } + + + +template<typename eT> +inline +void +spglue_join_rows::apply_noalias(SpMat<eT>& out, const SpMat<eT>& A, const SpMat<eT>& B) + { + arma_extra_debug_sigprint(); + + const uword A_n_rows = A.n_rows; + const uword A_n_cols = A.n_cols; + const uword A_n_nz = A.n_nonzero; + + const uword B_n_rows = B.n_rows; + const uword B_n_cols = B.n_cols; + const uword B_n_nz = B.n_nonzero; + + arma_debug_check + ( + ( (A_n_rows != B.n_rows) && ( (A_n_rows > 0) || (A_n_cols > 0) ) && ( (B_n_rows > 0) || (B_n_cols > 0) ) ), + "join_rows() / join_horiz(): number of rows must be the same" + ); + + const uword C_n_rows = (std::max)(A_n_rows, B_n_rows); + const uword C_n_cols = A_n_cols + B_n_cols; + const uword C_n_nz = A_n_nz + B_n_nz; + + if( ((C_n_rows * C_n_cols) == 0) || (C_n_nz == 0) ) + { + out.zeros(C_n_rows, C_n_cols); + return; + } + + out.reserve(C_n_rows, C_n_cols, C_n_nz); + + arrayops::copy( access::rwp(out.values), A.values, A_n_nz ); + arrayops::copy( access::rwp(out.values) + A_n_nz, B.values, B_n_nz+1 ); + + arrayops::copy( access::rwp(out.row_indices), A.row_indices, A_n_nz ); + arrayops::copy( access::rwp(out.row_indices) + A_n_nz, B.row_indices, B_n_nz+1 ); + + arrayops::copy( access::rwp(out.col_ptrs), A.col_ptrs, A_n_cols ); + arrayops::copy( access::rwp(out.col_ptrs) + A_n_cols, B.col_ptrs, B_n_cols+2 ); + + arrayops::inplace_plus( access::rwp(out.col_ptrs) + A_n_cols, A_n_nz, B_n_cols+1 ); + + + // // OLD METHOD + // + // umat locs(2, C_n_nz, arma_nozeros_indicator()); + // Col<eT> vals( C_n_nz, arma_nozeros_indicator()); + // + // uword* locs_mem = locs.memptr(); + // eT* vals_mem = vals.memptr(); + // + // typename SpMat<eT>::const_iterator A_it = A.begin(); + // + // for(uword i=0; i < A_n_nz; ++i) + // { + // const uword row = A_it.row(); + // const uword col = A_it.col(); + // + // (*locs_mem) = row; locs_mem++; + // (*locs_mem) = col; locs_mem++; + // + // (*vals_mem) = (*A_it); vals_mem++; + // + // ++A_it; + // } + // + // typename SpMat<eT>::const_iterator B_it = B.begin(); + // + // for(uword i=0; i < B_n_nz; ++i) + // { + // const uword row = B_it.row(); + // const uword col = A_n_cols + B_it.col(); + // + // (*locs_mem) = row; locs_mem++; + // (*locs_mem) = col; locs_mem++; + // + // (*vals_mem) = (*B_it); vals_mem++; + // + // ++B_it; + // } + // + // // TODO: the first element of B within C will always have a larger index than the last element of A in C; + // // TODO: so, is sorting really necessary here? + // SpMat<eT> tmp(locs, vals, C_n_rows, C_n_cols, true, false); + // + // out.steal_mem(tmp); + } + + + +template<typename eT, typename T1, typename T2, typename T3> +inline +void +spglue_join_rows::apply(SpMat<eT>& out, const SpBase<eT,T1>& A_expr, const SpBase<eT,T2>& B_expr, const SpBase<eT,T3>& C_expr) + { + arma_extra_debug_sigprint(); + + const unwrap_spmat<T1> UA(A_expr.get_ref()); + const unwrap_spmat<T2> UB(B_expr.get_ref()); + const unwrap_spmat<T3> UC(C_expr.get_ref()); + + const SpMat<eT>& A = UA.M; + const SpMat<eT>& B = UB.M; + const SpMat<eT>& C = UC.M; + + SpMat<eT> tmp; + + spglue_join_rows::apply_noalias(tmp, A, B); + spglue_join_rows::apply_noalias(out, tmp, C); + } + + + +template<typename eT, typename T1, typename T2, typename T3, typename T4> +inline +void +spglue_join_rows::apply(SpMat<eT>& out, const SpBase<eT,T1>& A_expr, const SpBase<eT,T2>& B_expr, const SpBase<eT,T3>& C_expr, const SpBase<eT,T4>& D_expr) + { + arma_extra_debug_sigprint(); + + const unwrap_spmat<T1> UA(A_expr.get_ref()); + const unwrap_spmat<T2> UB(B_expr.get_ref()); + const unwrap_spmat<T3> UC(C_expr.get_ref()); + const unwrap_spmat<T4> UD(D_expr.get_ref()); + + const SpMat<eT>& A = UA.M; + const SpMat<eT>& B = UB.M; + const SpMat<eT>& C = UC.M; + const SpMat<eT>& D = UD.M; + + SpMat<eT> AB; + SpMat<eT> ABC; + + spglue_join_rows::apply_noalias(AB, A, B); + spglue_join_rows::apply_noalias(ABC, AB, C); + spglue_join_rows::apply_noalias(out, ABC, D); + } + + + +//! @} |