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from_unsigned_to_value.hh
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26 
27 #ifndef MLN_CONVERT_IMPL_FROM_UNSIGNED_TO_VALUE_HH
28 # define MLN_CONVERT_IMPL_FROM_UNSIGNED_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/value/label.hh>
40 # include <mln/math/round.hh>
41 
42 
43 
44 
45 namespace mln
46 {
47 
48 
50  template <typename V>
51  void from_to_(const unsigned& from, Value<V>& to);
52 
54  void from_to_(const unsigned& from, bool& to);
55 
56 
57 
58 # ifndef MLN_INCLUDE_ONLY
59 
60  namespace convert
61  {
62 
63  namespace impl
64  {
65 
66  // Case 1:
67 
68  template <typename V>
69  inline
70  void
71  from_unsigned_to_value(const unsigned& from,
73  {
74  exact(to) = from;
75  }
76 
77  template <unsigned n>
78  inline
79  void
80  from_unsigned_to_value(const unsigned& from,
82  {
83  exact(to) = from;
84  }
85 
86  // Default: no conversion defined.
87 
88  template <typename V>
89  inline
90  void
91  from_unsigned_to_value(const unsigned&,
92  Value<V>&)
93  {
94  mlc_abort(V)::check();
95  }
96 
97  } // end of namespace mln::convert::impl
98 
99 
100  namespace internal
101  {
102 
103  template <typename V>
104  inline
105  void
106  from_unsigned_to_value_dispatch(const unsigned& from, Value<V>& to)
107  {
108  impl::from_unsigned_to_value(from, exact(to));
109  }
110 
111  } // end of namespace mln::convert::unsignedernal
112 
113  } // end of namespace mln::convert
114 
115 
116  template <typename V>
117  void
118  from_to_(const unsigned& from, Value<V>& to)
119  {
120  convert::internal::from_unsigned_to_value_dispatch(from, to);
121  }
122 
123 
124  inline
125  void
126  from_to_(const unsigned& from, bool& to)
127  {
128  to = (from != 0u);
129  }
130 
131 
132 # endif // ! MLN_INCLUDE_ONLY
133 
134 } // end of namespace mln
135 
136 
137 #endif // ! MLN_CONVERT_IMPL_FROM_UNSIGNED_TO_VALUE_HH