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// 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_row_as_mat
//! @{
template<typename T1>
inline
void
op_row_as_mat::apply(Mat<typename T1::elem_type>& out, const CubeToMatOp<T1, op_row_as_mat>& expr)
{
arma_extra_debug_sigprint();
typedef typename T1::elem_type eT;
const unwrap_cube<T1> U(expr.m);
const Cube<eT>& A = U.M;
const uword in_row = expr.aux_uword;
arma_debug_check_bounds( (in_row >= A.n_rows), "Cube::row_as_mat(): index out of bounds" );
const uword A_n_cols = A.n_cols;
const uword A_n_rows = A.n_rows;
const uword A_n_slices = A.n_slices;
out.set_size(A_n_slices, A_n_cols);
for(uword s=0; s < A_n_slices; ++s)
{
const eT* A_mem = &(A.at(in_row, 0, s));
eT* out_mem = &(out.at(s,0));
for(uword c=0; c < A_n_cols; ++c)
{
(*out_mem) = (*A_mem);
A_mem += A_n_rows;
out_mem += A_n_slices;
}
}
}
//! @}
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