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concept/scalar.hh
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25 
26 #ifndef MLN_VALUE_CONCEPT_SCALAR_HH
27 # define MLN_VALUE_CONCEPT_SCALAR_HH
28 
32 
33 # include <mln/core/concept/value.hh>
34 # include <mln/literal/one.hh>
35 
36 
37 namespace mln
38 {
39 
40  namespace value
41  {
42 
43  // Fwd decl.
44  template <typename E> struct Scalar;
45 
46 
47  // Category flag type.
48  template <>
49  struct Scalar<void>
50  {
51  typedef Value<void> super;
52  };
53 
54  template <typename E>
55  struct Scalar : public Value<E>
56  {
58  };
59 
60  } // end of namespace mln::value
61 
62 
63 
65  template <typename S>
67 
69  template <typename S>
71 
72 
73 # ifndef MLN_INCLUDE_ONLY
74 
75  template <typename S>
76  inline
78  {
79  mlc_converts_to(literal::one_t, S)::check();
80  return exact(rhs) += S(literal::one);
81  }
82 
83  template <typename S>
84  inline
85  S& operator--(value::Scalar<S>& rhs)
86  {
87  mlc_converts_to(literal::one_t, S)::check();
88  return exact(rhs) -= S(literal::one);
89  }
90 
91 # endif // ! MLN_INCLUDE_ONLY
92 
93 } // end of namespace mln
94 
95 
96 #endif // ! MLN_VALUE_CONCEPT_SCALAR_HH