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util/ord.hh
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25 
26 #ifndef MLN_UTIL_ORD_HH
27 # define MLN_UTIL_ORD_HH
28 
32 
33 
34 # include <mln/core/concept/object.hh>
35 # include <mln/trait/op/ord.hh>
36 
37 
38 
39 namespace mln
40 {
41 
42  namespace util
43  {
44 
47  template <typename T>
48  struct ord
49  {
50  bool operator()(const T& lhs, const T& rhs) const;
51  };
52 
53 
54 
56  template <typename T>
57  bool ord_strict(const T& lhs, const T& rhs);
58 
59 
61  template <typename T>
62  bool ord_weak(const T& lhs, const T& rhs);
63 
64 
65  template <typename T1, typename T2>
66  bool ord_lexi_strict(const T1& lhs_1, const T2& lhs_2,
67  const T1& rhs_1, const T2& rhs_2);
68 
69 
70 
71 # ifndef MLN_INCLUDE_ONLY
72 
73  // ord<T>
74 
75  template <typename T>
76  inline
77  bool
78  ord<T>::operator()(const T& lhs, const T& rhs) const
79  {
80  typedef typename mln::trait::op::ord<T>::ret F;
81  static const F f_ord = F();
82  return f_ord.strict(lhs, rhs);
83  }
84 
85  // ord_strict
86 
87  template <typename T>
88  inline
89  bool
90  ord_strict(const T& lhs, const T& rhs)
91  {
92  typedef typename mln::trait::op::ord<T>::ret F;
93  static const F f_ord = F();
94  return f_ord.strict(lhs, rhs);
95  }
96 
97  // ord_weak
98 
99  template <typename T>
100  inline
101  bool ord_weak(const T& lhs, const T& rhs)
102  {
103  typedef typename mln::trait::op::ord<T>::ret F;
104  static const F f_ord = F();
105  return f_ord.weak(lhs, rhs);
106  }
107 
108  // ord_lex_strict
109 
110  template <typename T1, typename T2>
111  inline
112  bool
113  ord_lexi_strict(const T1& lhs_1, const T2& lhs_2,
114  const T1& rhs_1, const T2& rhs_2)
115  {
116  return
117  util::ord_strict(lhs_1, rhs_1) ||
118  (lhs_1 == rhs_1 && util::ord_strict(lhs_2, rhs_2));
119  }
120 
121 # endif // ! MLN_INCLUDE_ONLY
122 
123  } // end of namespace mln::util
124 
125 } // end of namespace mln
126 
127 
128 #endif // ! MLN_UTIL_ORD_HH