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interval.hh
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25 
26 #ifndef MLN_VALUE_INTERVAL_HH
27 # define MLN_VALUE_INTERVAL_HH
28 
36 # include <mln/core/concept/object.hh>
37 
38 
39 namespace mln
40 {
41 
42  namespace value
43  {
44 
46 
47  template <typename T>
48  struct interval_ : public Object< interval_<T> >
49  {
50  interval_(const T& from, const T& to);
51  T from, to;
52 
53  template <typename U>
54  operator interval_<U>() const;
55  };
56 
57 
58  template <typename T>
60  interval(const T& from, const T& to);
61 
62 
63 # ifndef MLN_INCLUDE_ONLY
64 
65  template <typename T>
66  inline
67  interval_<T>::interval_(const T& from, const T& to)
68  : from(from),
69  to(to)
70  {
71  mln_precondition(from <= to);
72  }
73 
74  template <typename T>
75  template <typename U>
76  inline
78  {
79  mln_invariant(from <= to);
80  interval_<U> tmp(from, to);
81  mln_postcondition(tmp.from <= tmp.to);
82  return tmp;
83  }
84 
85  template <typename T>
86  inline
87  interval_<T>
88  interval(const T& from, const T& to)
89  {
90  mln_precondition(from <= to);
91  interval_<T> tmp(from, to);
92  return tmp;
93  }
94 
95 # endif // ! MLN_INCLUDE_ONLY
96 
97  } // end of namespace mln::value
98 
99 } // end of namespace mln
100 
101 
102 #endif // ! MLN_VALUE_INTERVAL_HH