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Diffstat (limited to 'src/armadillo/include/armadillo_bits/glue_atan2_meat.hpp')
| -rw-r--r-- | src/armadillo/include/armadillo_bits/glue_atan2_meat.hpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/glue_atan2_meat.hpp b/src/armadillo/include/armadillo_bits/glue_atan2_meat.hpp new file mode 100644 index 0000000..38469ed --- /dev/null +++ b/src/armadillo/include/armadillo_bits/glue_atan2_meat.hpp @@ -0,0 +1,228 @@ +// 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 glue_atan2 +//! @{ + + + +template<typename T1, typename T2> +inline +void +glue_atan2::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_atan2>& expr) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const Proxy<T1> P1(expr.A); + const Proxy<T2> P2(expr.B); + + arma_assert_same_size(P1, P2, "atan2()"); + + const bool bad_alias = ( (Proxy<T1>::has_subview && P1.is_alias(out)) || (Proxy<T2>::has_subview && P2.is_alias(out)) ); + + if(bad_alias == false) + { + glue_atan2::apply_noalias(out, P1, P2); + } + else + { + Mat<eT> tmp; + + glue_atan2::apply_noalias(tmp, P1, P2); + + out.steal_mem(tmp); + } + } + + + +template<typename T1, typename T2> +inline +void +glue_atan2::apply_noalias(Mat<typename T1::elem_type>& out, const Proxy<T1>& P1, const Proxy<T2>& P2) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const uword n_rows = P1.get_n_rows(); + const uword n_cols = P1.get_n_cols(); + const uword n_elem = P1.get_n_elem(); + + out.set_size(n_rows, n_cols); + + eT* out_mem = out.memptr(); + + const bool use_mp = arma_config::openmp && mp_gate<eT, (Proxy<T1>::use_mp || Proxy<T2>::use_mp)>::eval(n_elem); + const bool use_at = Proxy<T1>::use_at || Proxy<T2>::use_at; + + if(use_at == false) + { + typename Proxy<T1>::ea_type eaP1 = P1.get_ea(); + typename Proxy<T2>::ea_type eaP2 = P2.get_ea(); + + if(use_mp) + { + #if defined(ARMA_USE_OPENMP) + { + const int n_threads = mp_thread_limit::get(); + #pragma omp parallel for schedule(static) num_threads(n_threads) + for(uword i=0; i<n_elem; ++i) + { + out_mem[i] = std::atan2( eaP1[i], eaP2[i] ); + } + } + #endif + } + else + { + for(uword i=0; i<n_elem; ++i) + { + out_mem[i] = std::atan2( eaP1[i], eaP2[i] ); + } + } + } + else + { + if(use_mp) + { + const unwrap<typename Proxy<T1>::stored_type> U1(P1.Q); + const unwrap<typename Proxy<T2>::stored_type> U2(P2.Q); + + out = arma::atan2(U1.M, U2.M); + } + else + { + for(uword col=0; col < n_cols; ++col) + for(uword row=0; row < n_rows; ++row) + { + *out_mem = std::atan2( P1.at(row,col), P2.at(row,col) ); + out_mem++; + } + } + } + } + + + +template<typename T1, typename T2> +inline +void +glue_atan2::apply(Cube<typename T1::elem_type>& out, const GlueCube<T1, T2, glue_atan2>& expr) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const ProxyCube<T1> P1(expr.A); + const ProxyCube<T2> P2(expr.B); + + arma_assert_same_size(P1, P2, "atan2()"); + + const bool bad_alias = ( (ProxyCube<T1>::has_subview && P1.is_alias(out)) || (ProxyCube<T2>::has_subview && P2.is_alias(out)) ); + + if(bad_alias == false) + { + glue_atan2::apply_noalias(out, P1, P2); + } + else + { + Cube<eT> tmp; + + glue_atan2::apply_noalias(tmp, P1, P2); + + out.steal_mem(tmp); + } + } + + + +template<typename T1, typename T2> +inline +void +glue_atan2::apply_noalias(Cube<typename T1::elem_type>& out, const ProxyCube<T1>& P1, const ProxyCube<T2>& P2) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const uword n_rows = P1.get_n_rows(); + const uword n_cols = P1.get_n_cols(); + const uword n_slices = P1.get_n_slices(); + const uword n_elem = P1.get_n_elem(); + + out.set_size(n_rows, n_cols, n_slices); + + eT* out_mem = out.memptr(); + + const bool use_mp = arma_config::openmp && mp_gate<eT, (ProxyCube<T1>::use_mp || ProxyCube<T2>::use_mp)>::eval(n_elem); + const bool use_at = ProxyCube<T1>::use_at || ProxyCube<T2>::use_at; + + if(use_at == false) + { + typename ProxyCube<T1>::ea_type eaP1 = P1.get_ea(); + typename ProxyCube<T2>::ea_type eaP2 = P2.get_ea(); + + if(use_mp) + { + #if defined(ARMA_USE_OPENMP) + { + const int n_threads = mp_thread_limit::get(); + #pragma omp parallel for schedule(static) num_threads(n_threads) + for(uword i=0; i<n_elem; ++i) + { + out_mem[i] = std::atan2( eaP1[i], eaP2[i] ); + } + } + #endif + } + else + { + for(uword i=0; i<n_elem; ++i) + { + out_mem[i] = std::atan2( eaP1[i], eaP2[i] ); + } + } + } + else + { + if(use_mp) + { + const unwrap_cube<typename ProxyCube<T1>::stored_type> U1(P1.Q); + const unwrap_cube<typename ProxyCube<T2>::stored_type> U2(P2.Q); + + out = arma::atan2(U1.M, U2.M); + } + else + { + for(uword slice=0; slice < n_slices; ++slice) + for(uword col=0; col < n_cols; ++col ) + for(uword row=0; row < n_rows; ++row ) + { + *out_mem = std::atan2( P1.at(row,col,slice), P2.at(row,col,slice) ); + out_mem++; + } + } + } + } + + + +//! @} |