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threshold_ge.hh
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26 
27 #ifndef MLN_FUN_V2B_THRESHOLD_GE_HH
28 # define MLN_FUN_V2B_THRESHOLD_GE_HH
29 
33 
34 # include <mln/core/concept/function.hh>
35 
36 
37 namespace mln
38 {
39 
40  namespace fun
41  {
42 
43  namespace v2b
44  {
45 
48  template <typename V>
49  struct threshold_ge : public Function_v2b< threshold_ge<V> >
50  {
51  typedef bool result;
52  bool operator()(const V& v) const;
53 
54  threshold_ge(const V& a);
55  V a;
56  };
57 
58 
59 # ifndef MLN_INCLUDE_ONLY
60 
61  template <typename V>
62  inline
64  : a(a)
65  {
66  }
67 
68  template <typename V>
69  inline
70  bool
71  threshold_ge<V>::operator()(const V& v) const
72  {
73  // Here the test seems to be inversed compared to the usual
74  // use. Indeed, we want to preserve the following convention:
75  // True for foreground and False for background.
76  return v >= a;
77  }
78 
79 # endif // ! MLN_INCLUDE_ONLY
80 
81  } // end of namespace mln::fun::v2b
82 
83  } // end of namespace mln::fun
84 
85 } // end of namespace mln
86 
87 
88 #endif // ! MLN_FUN_V2B_THRESHOLD_GE_HH