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set/inter.hh
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25 
26 #ifndef MLN_SET_INTER_HH
27 # define MLN_SET_INTER_HH
28 
32 
33 # include <algorithm>
34 # include <iterator>
35 
36 # include <mln/core/site_set/p_set.hh>
37 # include <mln/convert/from_to.hh>
38 # include <mln/util/ord.hh>
39 
40 
41 
42 namespace mln
43 {
44 
45  namespace set
46  {
47 
52  template <typename Sl, typename Sr>
53  p_set<mln_site(Sl)>
54  inter(const Site_Set<Sl>& lhs, const Site_Set<Sr>& rhs);
55 
56 
57 # ifndef MLN_INCLUDE_ONLY
58 
59  template <typename Sl, typename Sr>
60  inline
61  p_set<mln_site(Sl)>
62  inter(const Site_Set<Sl>& lhs, const Site_Set<Sr>& rhs)
63  {
64  mln_trace("set::inter");
65 
66  typedef mln_site(Sl) P;
67  mlc_converts_to(mln_psite(Sr), P)::check();
68  std::set< P, util::ord<P> > sl, sr, si;
69  convert::from_to(lhs, sl);
70  convert::from_to(rhs, sr);
71  std::set_intersection(sl.begin(), sl.end(),
72  sr.begin(), sr.end(),
73  std::inserter(si, si.begin()),
74  util::ord<P>());
75  p_set<P> s;
76  convert::from_to(si, s);
77 
78  return s;
79  }
80 
81 # endif // ! MLN_INCLUDE_ONLY
82 
83  } // end of namespace mln::set
84 
85 } // end of namespace mln
86 
87 
88 #endif // ! MLN_SET_INTER_HH