111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
// 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_toeplitz
|
|
//! @{
|
|
|
|
|
|
|
|
template<typename T1>
|
|
inline
|
|
void
|
|
op_toeplitz::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_toeplitz>& in)
|
|
{
|
|
arma_extra_debug_sigprint();
|
|
|
|
typedef typename T1::elem_type eT;
|
|
|
|
const unwrap_check<T1> tmp(in.m, out);
|
|
const Mat<eT>& X = tmp.M;
|
|
|
|
arma_debug_check( ((X.is_vec() == false) && (X.is_empty() == false)), "toeplitz(): given object must be a vector" );
|
|
|
|
const uword N = X.n_elem;
|
|
const eT* X_mem = X.memptr();
|
|
|
|
out.set_size(N,N);
|
|
|
|
for(uword col=0; col < N; ++col)
|
|
{
|
|
eT* col_mem = out.colptr(col);
|
|
|
|
uword i;
|
|
|
|
i = col;
|
|
for(uword row=0; row < col; ++row, --i) { col_mem[row] = X_mem[i]; }
|
|
|
|
i = 0;
|
|
for(uword row=col; row < N; ++row, ++i) { col_mem[row] = X_mem[i]; }
|
|
}
|
|
}
|
|
|
|
|
|
|
|
template<typename T1>
|
|
inline
|
|
void
|
|
op_toeplitz_c::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_toeplitz_c>& in)
|
|
{
|
|
arma_extra_debug_sigprint();
|
|
|
|
typedef typename T1::elem_type eT;
|
|
|
|
const unwrap_check<T1> tmp(in.m, out);
|
|
const Mat<eT>& X = tmp.M;
|
|
|
|
arma_debug_check( ((X.is_vec() == false) && (X.is_empty() == false)), "circ_toeplitz(): given object must be a vector" );
|
|
|
|
const uword N = X.n_elem;
|
|
const eT* X_mem = X.memptr();
|
|
|
|
out.set_size(N,N);
|
|
|
|
if(X.is_rowvec())
|
|
{
|
|
for(uword row=0; row < N; ++row)
|
|
{
|
|
uword i;
|
|
|
|
i = row;
|
|
for(uword col=0; col < row; ++col, --i) { out.at(row,col) = X_mem[N-i]; }
|
|
|
|
i = 0;
|
|
for(uword col=row; col < N; ++col, ++i) { out.at(row,col) = X_mem[i]; }
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(uword col=0; col < N; ++col)
|
|
{
|
|
eT* col_mem = out.colptr(col);
|
|
|
|
uword i;
|
|
|
|
i = col;
|
|
for(uword row=0; row < col; ++row, --i) { col_mem[row] = X_mem[N-i]; }
|
|
|
|
i = 0;
|
|
for(uword row=col; row < N; ++row, ++i) { col_mem[row] = X_mem[i]; }
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//! @}
|