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Diffstat (limited to 'src/armadillo/include/armadillo_bits/glue_polyval_meat.hpp')
-rw-r--r-- | src/armadillo/include/armadillo_bits/glue_polyval_meat.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/glue_polyval_meat.hpp b/src/armadillo/include/armadillo_bits/glue_polyval_meat.hpp new file mode 100644 index 0000000..2c2a59c --- /dev/null +++ b/src/armadillo/include/armadillo_bits/glue_polyval_meat.hpp @@ -0,0 +1,83 @@ +// 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_polyval +//! @{ + + + +template<typename eT> +inline +void +glue_polyval::apply_noalias(Mat<eT>& out, const Mat<eT>& P, const Mat<eT>& X) + { + arma_extra_debug_sigprint(); + + out.set_size(X.n_rows, X.n_cols); + + const eT* P_mem = P.memptr(); + const uword P_n_elem = P.n_elem; + + out.fill(P_mem[0]); + + for(uword i=1; i < P_n_elem; ++i) + { + out = out % X + P_mem[i]; + } + } + + + +template<typename T1, typename T2> +inline +void +glue_polyval::apply(Mat<typename T1::elem_type>& out, const Glue<T1,T2,glue_polyval>& expr) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const quasi_unwrap<T1> UP(expr.A); + const quasi_unwrap<T2> UX(expr.B); + + const Mat<eT>& P = UP.M; + const Mat<eT>& X = UX.M; + + arma_debug_check( ((P.is_vec() == false) && (P.is_empty() == false)), "polyval(): argument P must be a vector" ); + + if(P.is_empty() || X.is_empty()) + { + out.zeros(X.n_rows, X.n_cols); + return; + } + + if(UP.is_alias(out) || UX.is_alias(out)) + { + Mat<eT> tmp; + glue_polyval::apply_noalias(tmp, P, X); + out.steal_mem(tmp); + } + else + { + glue_polyval::apply_noalias(out, P, X); + } + } + + + +//! @} |