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Diffstat (limited to 'src/armadillo/include/armadillo_bits/glue_min_meat.hpp')
-rw-r--r-- | src/armadillo/include/armadillo_bits/glue_min_meat.hpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/glue_min_meat.hpp b/src/armadillo/include/armadillo_bits/glue_min_meat.hpp new file mode 100644 index 0000000..0fc6e3f --- /dev/null +++ b/src/armadillo/include/armadillo_bits/glue_min_meat.hpp @@ -0,0 +1,183 @@ +// 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_min +//! @{ + + + +template<typename T1, typename T2> +inline +void +glue_min::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_min>& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const Proxy<T1> PA(X.A); + const Proxy<T2> PB(X.B); + + if( (PA.is_alias(out) && PA.has_subview) || (PB.is_alias(out) && PB.has_subview) ) + { + Mat<eT> tmp; + + glue_min::apply(tmp, PA, PB); + + out.steal_mem(tmp); + } + else + { + glue_min::apply(out, PA, PB); + } + } + + + +template<typename eT, typename T1, typename T2> +inline +void +glue_min::apply(Mat<eT>& out, const Proxy<T1>& PA, const Proxy<T2>& PB) + { + arma_extra_debug_sigprint(); + + const uword n_rows = PA.get_n_rows(); + const uword n_cols = PA.get_n_cols(); + + arma_debug_assert_same_size(n_rows, n_cols, PB.get_n_rows(), PB.get_n_cols(), "element-wise min()"); + + const arma_lt_comparator<eT> comparator; + + out.set_size(n_rows, n_cols); + + eT* out_mem = out.memptr(); + + if( (Proxy<T1>::use_at == false) && (Proxy<T2>::use_at == false) ) + { + typename Proxy<T1>::ea_type A = PA.get_ea(); + typename Proxy<T2>::ea_type B = PB.get_ea(); + + const uword N = PA.get_n_elem(); + + for(uword i=0; i<N; ++i) + { + const eT Ai = A[i]; + const eT Bi = B[i]; + + out_mem[i] = comparator(Ai,Bi) ? Ai : Bi; + } + } + else + { + for(uword col=0; col < n_cols; ++col) + for(uword row=0; row < n_rows; ++row) + { + const eT Ai = PA.at(row,col); + const eT Bi = PB.at(row,col); + + *out_mem = comparator(Ai,Bi) ? Ai : Bi; + + ++out_mem; + } + } + } + + + +template<typename T1, typename T2> +inline +void +glue_min::apply(Cube<typename T1::elem_type>& out, const GlueCube<T1, T2, glue_min>& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const ProxyCube<T1> PA(X.A); + const ProxyCube<T2> PB(X.B); + + if( (PA.is_alias(out) && PA.has_subview) || (PB.is_alias(out) && PB.has_subview) ) + { + Cube<eT> tmp; + + glue_min::apply(tmp, PA, PB); + + out.steal_mem(tmp); + } + else + { + glue_min::apply(out, PA, PB); + } + } + + + +template<typename eT, typename T1, typename T2> +inline +void +glue_min::apply(Cube<eT>& out, const ProxyCube<T1>& PA, const ProxyCube<T2>& PB) + { + arma_extra_debug_sigprint(); + + const uword n_rows = PA.get_n_rows(); + const uword n_cols = PA.get_n_cols(); + const uword n_slices = PA.get_n_slices(); + + arma_debug_assert_same_size(n_rows, n_cols, n_slices, PB.get_n_rows(), PB.get_n_cols(), PB.get_n_slices(), "element-wise min()"); + + const arma_lt_comparator<eT> comparator; + + out.set_size(n_rows, n_cols, n_slices); + + eT* out_mem = out.memptr(); + + if( (ProxyCube<T1>::use_at == false) && (ProxyCube<T2>::use_at == false) ) + { + typename ProxyCube<T1>::ea_type A = PA.get_ea(); + typename ProxyCube<T2>::ea_type B = PB.get_ea(); + + const uword N = PA.get_n_elem(); + + for(uword i=0; i<N; ++i) + { + const eT Ai = A[i]; + const eT Bi = B[i]; + + out_mem[i] = comparator(Ai,Bi) ? Ai : Bi; + } + } + 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 ) + { + const eT Ai = PA.at(row,col,slice); + const eT Bi = PB.at(row,col,slice); + + *out_mem = comparator(Ai,Bi) ? Ai : Bi; + + ++out_mem; + } + } + } + + + +//! @} |