mps-0.0.0
MatrixProductStatesinC++
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cmps_product_state.cc
1 // -*- mode: c++; fill-column: 80; c-basic-offset: 2; indent-tabs-mode: nil -*-
2 /*
3  Copyright (c) 2010 Juan Jose Garcia Ripoll
4 
5  Tensor is free software; you can redistribute it and/or modify it
6  under the terms of the GNU Library General Public License as published
7  by the Free Software Foundation; either version 2 of the License, or
8  (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU Library General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License along
16  with this program; if not, write to the Free Software Foundation, Inc.,
17  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19 
20 #include <algorithm>
21 #include <mps/mps.h>
22 
23 namespace mps {
24 
25  const CMPS product_state(index length, const tensor::CTensor &local_state)
26  {
27  assert(local_state.rank() == 1);
28  assert(local_state.size());
29  assert(length > 0);
30 
31  index d = local_state.size();
32  CMPS output(length);
33  std::fill(output.begin(), output.end(), reshape(local_state, 1, d, 1));
34  return output;
35  }
36 
37 } // namespace mps
Real matrix product structure.
Definition: cmps.h:31
const RMPS product_state(index length, const tensor::RTensor &local_state)
Create a product state.