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round_sat.hh
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25 
26 #ifndef MLN_MATH_ROUND_SAT_HH
27 # define MLN_MATH_ROUND_SAT_HH
28 
34 # include <cmath>
35 
36 # include <mln/core/concept/function.hh>
37 # include <mln/trait/value_.hh>
38 
39 
40 
41 namespace mln
42 {
43 
44  namespace math
45  {
46 
47 
48  template <typename R>
49  struct round_sat_ : public Function_v2v< round_sat_<R> >
50  {
51  typedef R result;
52 
53  template <typename T>
54  result operator()(const T& v) const;
55 
56  };
57 
58 
59 # ifndef MLN_INCLUDE_ONLY
60 
61  template <typename R>
62  template <typename T>
63  inline
64  R round_sat_<R>::operator()(const T& v) const
65  {
66  long int l = (long int)(v + 0.49999); // FIXME: !!!
67  return
68  l < mln_min(R)
69  ? mln_min(R)
70  : (l > mln_max(R)
71  ? mln_max(R)
72  : R(l));
73  }
74 
75 # endif // ! MLN_INCLUDE_ONLY
76 
77  } // end of namespace mln::math
78 
79 } // end of namespace mln
80 
81 
82 #endif // ! MLN_MATH_ROUND_SAT_HH