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from_int_to_value.hh
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26 
27 #ifndef MLN_CONVERT_IMPL_FROM_INT_TO_VALUE_HH
28 # define MLN_CONVERT_IMPL_FROM_INT_TO_VALUE_HH
29 
35 
36 # include <utility>
37 # include <mln/value/concept/integer.hh>
38 # include <mln/core/concept/value.hh>
39 # include <mln/math/round.hh>
40 
41 
42 
43 
44 namespace mln
45 {
46 
48  template <typename V>
49  void from_to_(const int& from, Value<V>& to);
50 
51 
52 # ifndef MLN_INCLUDE_ONLY
53 
54  namespace convert
55  {
56 
57  namespace impl
58  {
59 
60  // Case 1:
61 
62  template <typename V>
63  inline
64  void
65  from_int_to_value(const int& from,
67  {
68  exact(to) = from;
69  }
70 
71  // Default: no conversion defined.
72 
73  template <typename V>
74  inline
75  void
76  from_int_to_value(const int& from,
77  Value<V>& to)
78  {
79  (void) from;
80  (void) to;
81  mlc_abort(V)::check();
82  }
83 
84  } // end of namespace mln::convert::impl
85 
86  namespace internal
87  {
88 
89  template <typename V>
90  inline
91  void
92  from_int_to_value_dispatch(const int& from, Value<V>& to)
93  {
94  impl::from_int_to_value(from, exact(to));
95  }
96 
97  } // end of namespace mln::convert::internal
98 
99  } // end of namespace mln::convert
100 
101 
102  // Facades.
103 
104  template <typename V>
105  void
106  from_to_(const int& from, Value<V>& to)
107  {
108  convert::internal::from_int_to_value_dispatch(from, to);
109  }
110 
111 # endif // ! MLN_INCLUDE_ONLY
112 
113 } // end of namespace mln
114 
115 
116 #endif // ! MLN_CONVERT_IMPL_FROM_INT_TO_VALUE_HH