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promote.hh
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26 
27 #ifndef MLN_TRAIT_PROMOTE_HH
28 # define MLN_TRAIT_PROMOTE_HH
29 
38 # include <mln/trait/solve.hh>
39 
40 
41 # define mln_trait_promote(T, U) typename mln::trait::promote< T , U >::ret
42 # define mln_trait_promote_(T, U) mln::trait::promote< T , U >::ret
43 
44 
45 
46 namespace mln
47 {
48 
49  // Fwd decl.
50  template <typename E> struct Object;
51 
52 
53  namespace trait
54  {
55 
60  template <typename T, typename U>
61  struct promote : public solve_binary<promote, T, U>
62  {
63  };
64 
65 
72  template <typename T>
73  struct set_binary_< promote, Object, T, Object, T >
74  {
75  typedef T ret;
76  };
77 
78 
79  } // end of namespace mln::trait
80 
81 } // end of namespace mln
82 
83 
84 #endif // ! MLN_TRAIT_PROMOTE_HH