Milena (Olena)  User documentation 2.0a Id
 All Classes Namespaces Functions Variables Typedefs Enumerator Groups Pages
data/compute.hh
1 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development
2 // Laboratory (LRDE)
3 //
4 // This file is part of Olena.
5 //
6 // Olena is free software: you can redistribute it and/or modify it under
7 // the terms of the GNU General Public License as published by the Free
8 // Software Foundation, version 2 of the License.
9 //
10 // Olena 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 GNU
13 // General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
17 //
18 // As a special exception, you may use this file as part of a free
19 // software project without restriction. Specifically, if other files
20 // instantiate templates or use macros or inline functions from this
21 // file, or you compile this file and link it with other files to produce
22 // an executable, this file does not by itself cause the resulting
23 // executable to be covered by the GNU General Public License. This
24 // exception does not however invalidate any other reasons why the
25 // executable file might be covered by the GNU General Public License.
26 
27 #ifndef MLN_DATA_COMPUTE_HH
28 # define MLN_DATA_COMPUTE_HH
29 
33 
34 # include <mln/data/update.hh>
35 # include <mln/core/concept/meta_accumulator.hh>
36 
37 
38 
39 namespace mln
40 {
41 
42  namespace data
43  {
44 
54  //
55  template <typename A, typename I>
56  mln_result(A)
57  compute(const Accumulator<A>& a, const Image<I>& input);
58 
59 
67  //
68  template <typename A, typename I>
69  mln_result(A)
70  compute(Accumulator<A>& a, const Image<I>& input);
71 
72 
79  template <typename A, typename I>
80  mln_meta_accu_result(A, mln_value(I))
81  compute(const Meta_Accumulator<A>& a, const Image<I>& input);
82 
83 
84 
85 # ifndef MLN_INCLUDE_ONLY
86 
87 
88  // Facades.
89 
90  template <typename A, typename I>
91  inline
92  mln_result(A)
93  compute(const Accumulator<A>& a_, const Image<I>& input)
94  {
95  (void) a_;
96  A a;
97  return compute(a, input);
98  }
99 
100 
101  template <typename A, typename I>
102  inline
103  mln_result(A)
104  compute(Accumulator<A>& a_, const Image<I>& input)
105  {
106  trace::entering("data::compute");
107 
108  A a = exact(a_);
109  data::internal::update_tests(a, input);
110 
111  a.init();
112  data::internal::update_dispatch(a, input);
113 
114  trace::exiting("data::compute");
115  return a;
116  }
117 
118 
119  template <typename A, typename I>
120  inline
121  mln_meta_accu_result(A, mln_value(I))
122  compute(const Meta_Accumulator<A>& a, const Image<I>& input)
123  {
124  typedef mln_accu_with(A, mln_value(I)) A_;
125  A_ a_ = accu::unmeta(exact(a), mln_value(I)());
126 
127  return data::compute(a_, input); // Call the previous version.
128  }
129 
130 # endif // ! MLN_INCLUDE_ONLY
131 
132  } // end of namespace mln::data
133 
134 } // end of namespace mln
135 
136 
137 #endif // ! MLN_DATA_COMPUTE_HH