LIBINT  2.6.0
contractable.h
1 /*
2  * Copyright (C) 2004-2019 Edward F. Valeev
3  *
4  * This file is part of Libint.
5  *
6  * Libint is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Libint is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Libint. If not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #ifndef _libint2_src_bin_libint_contract_h_
22 #define _libint2_src_bin_libint_contract_h_
23 
24 namespace libint2 {
25 
27  template <typename Derived> class Contractable {
28  public:
29  Contractable() : value_(default_value_) {}
30  Contractable(const Contractable& source) : value_(source.value_) {}
31  Contractable& operator=(const Contractable& source) {
32  value_ = source.value_;
33  return *this;
34  }
35  bool contracted() const { return value_; }
36  void uncontract() { value_ = false; }
37  void contract() { value_ = true; }
38  static void set_contracted_default_value(bool dv) { default_value_ = dv; }
39  private:
40  bool value_;
41  static bool default_value_;
42  };
43  template <typename Derived>
45 
46 };
47 
48 #endif
use this as a base to add to Derived a "contracted()" attribute
Definition: contractable.h:27
Defaults definitions for various parameters assumed by Libint.
Definition: algebra.cc:24