From eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d Mon Sep 17 00:00:00 2001 From: Nao Pross Date: Mon, 12 Feb 2024 14:52:43 +0100 Subject: Move into version control --- .../include/armadillo_bits/op_reshape_meat.hpp | 246 +++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 src/armadillo/include/armadillo_bits/op_reshape_meat.hpp (limited to 'src/armadillo/include/armadillo_bits/op_reshape_meat.hpp') diff --git a/src/armadillo/include/armadillo_bits/op_reshape_meat.hpp b/src/armadillo/include/armadillo_bits/op_reshape_meat.hpp new file mode 100644 index 0000000..1846dc8 --- /dev/null +++ b/src/armadillo/include/armadillo_bits/op_reshape_meat.hpp @@ -0,0 +1,246 @@ +// 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 op_reshape +//! @{ + + + +template +inline +void +op_reshape::apply(Mat& actual_out, const Op& in) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const uword new_n_rows = in.aux_uword_a; + const uword new_n_cols = in.aux_uword_b; + + if(is_Mat::value || (arma_config::openmp && Proxy::use_mp)) + { + const unwrap U(in.m); + const Mat& A = U.M; + + if(&actual_out == &A) + { + op_reshape::apply_mat_inplace(actual_out, new_n_rows, new_n_cols); + } + else + { + op_reshape::apply_mat_noalias(actual_out, A, new_n_rows, new_n_cols); + } + } + else + { + const Proxy P(in.m); + + const bool is_alias = P.is_alias(actual_out); + + Mat tmp; + Mat& out = (is_alias) ? tmp : actual_out; + + if(is_Mat::stored_type>::value) + { + const quasi_unwrap::stored_type> U(P.Q); + + op_reshape::apply_mat_noalias(out, U.M, new_n_rows, new_n_cols); + } + else + { + op_reshape::apply_proxy_noalias(out, P, new_n_rows, new_n_cols); + } + + if(is_alias) { actual_out.steal_mem(tmp); } + } + } + + + +template +inline +void +op_reshape::apply_mat_inplace(Mat& A, const uword new_n_rows, const uword new_n_cols) + { + arma_extra_debug_sigprint(); + + const uword new_n_elem = new_n_rows * new_n_cols; + + if(A.n_elem == new_n_elem) { A.set_size(new_n_rows, new_n_cols); return; } + + Mat B; + + op_reshape::apply_mat_noalias(B, A, new_n_rows, new_n_cols); + + A.steal_mem(B); + } + + + +template +inline +void +op_reshape::apply_mat_noalias(Mat& out, const Mat& A, const uword new_n_rows, const uword new_n_cols) + { + arma_extra_debug_sigprint(); + + out.set_size(new_n_rows, new_n_cols); + + const uword n_elem_to_copy = (std::min)(A.n_elem, out.n_elem); + + eT* out_mem = out.memptr(); + + arrayops::copy( out_mem, A.memptr(), n_elem_to_copy ); + + if(n_elem_to_copy < out.n_elem) + { + const uword n_elem_leftover = out.n_elem - n_elem_to_copy; + + arrayops::fill_zeros(&(out_mem[n_elem_to_copy]), n_elem_leftover); + } + } + + + +template +inline +void +op_reshape::apply_proxy_noalias(Mat& out, const Proxy& P, const uword new_n_rows, const uword new_n_cols) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + out.set_size(new_n_rows, new_n_cols); + + const uword n_elem_to_copy = (std::min)(P.get_n_elem(), out.n_elem); + + eT* out_mem = out.memptr(); + + if(Proxy::use_at == false) + { + typename Proxy::ea_type Pea = P.get_ea(); + + for(uword i=0; i < n_elem_to_copy; ++i) { out_mem[i] = Pea[i]; } + } + else + { + uword i = 0; + + const uword P_n_rows = P.get_n_rows(); + const uword P_n_cols = P.get_n_cols(); + + for(uword col=0; col < P_n_cols; ++col) + for(uword row=0; row < P_n_rows; ++row) + { + if(i >= n_elem_to_copy) { goto nested_loop_end; } + + out_mem[i] = P.at(row,col); + + ++i; + } + + nested_loop_end: ; + } + + if(n_elem_to_copy < out.n_elem) + { + const uword n_elem_leftover = out.n_elem - n_elem_to_copy; + + arrayops::fill_zeros(&(out_mem[n_elem_to_copy]), n_elem_leftover); + } + } + + + +template +inline +void +op_reshape::apply(Cube& out, const OpCube& in) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const unwrap_cube U(in.m); + const Cube& A = U.M; + + const uword new_n_rows = in.aux_uword_a; + const uword new_n_cols = in.aux_uword_b; + const uword new_n_slices = in.aux_uword_c; + + if(&out == &A) + { + op_reshape::apply_cube_inplace(out, new_n_rows, new_n_cols, new_n_slices); + } + else + { + op_reshape::apply_cube_noalias(out, A, new_n_rows, new_n_cols, new_n_slices); + } + } + + + +template +inline +void +op_reshape::apply_cube_inplace(Cube& A, const uword new_n_rows, const uword new_n_cols, const uword new_n_slices) + { + arma_extra_debug_sigprint(); + + const uword new_n_elem = new_n_rows * new_n_cols * new_n_slices; + + if(A.n_elem == new_n_elem) { A.set_size(new_n_rows, new_n_cols, new_n_slices); return; } + + Cube B; + + op_reshape::apply_cube_noalias(B, A, new_n_rows, new_n_cols, new_n_slices); + + A.steal_mem(B); + } + + + +template +inline +void +op_reshape::apply_cube_noalias(Cube& out, const Cube& A, const uword new_n_rows, const uword new_n_cols, const uword new_n_slices) + { + arma_extra_debug_sigprint(); + + out.set_size(new_n_rows, new_n_cols, new_n_slices); + + const uword n_elem_to_copy = (std::min)(A.n_elem, out.n_elem); + + eT* out_mem = out.memptr(); + + arrayops::copy( out_mem, A.memptr(), n_elem_to_copy ); + + if(n_elem_to_copy < out.n_elem) + { + const uword n_elem_leftover = out.n_elem - n_elem_to_copy; + + arrayops::fill_zeros(&(out_mem[n_elem_to_copy]), n_elem_leftover); + } + } + + + +//! @} -- cgit v1.2.1