tensor-0.1.0
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tensor_fold_d.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 "tensor_fold.cc"
21 
22 namespace tensor {
23 
39  const Tensor<double> fold(const Tensor<double> &a, int ndx1,
40  const Tensor<double> &b, int ndx2)
41  {
42  Tensor<double> output;
43  do_fold<double, false>(output, a, ndx1, b, ndx2);
44  return output;
45  }
46 
52  const Tensor<double> foldc(const Tensor<double> &a, int ndx1,
53  const Tensor<double> &b, int ndx2)
54  {
55  Tensor<double> output;
56  do_fold<double, false>(output, a, ndx1, b, ndx2);
57  return output;
58  }
59 
60  void fold_into(Tensor<double> &c, const Tensor<double> &a, int ndx1,
61  const Tensor<double> &b, int ndx2)
62  {
63  do_fold<double, false>(c, a, ndx1, b, ndx2);
64  }
65 
68  const Tensor<double> mmult(const Tensor<double> &m1, const Tensor<double> &m2)
69  {
70  return fold(m1, -1, m2, 0);
71  }
72 
73  void mmult_into(Tensor<double> &c, const Tensor<double> &m1, const Tensor<double> &m2)
74  {
75  fold_into(c, m1, -1, m2, 0);
76  }
77 
78 } // namespace tensor
const Tensor< double > fold(const Tensor< double > &a, int ndx1, const Tensor< double > &b, int ndx2)
Contraction of two tensors.
const Tensor< double > foldc(const Tensor< double > &a, int ndx1, const Tensor< double > &b, int ndx2)
Contraction of two tensors.