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fun/math/abs.hh
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25 
26 #ifndef MLN_FUN_MATH_ABS_HH
27 # define MLN_FUN_MATH_ABS_HH
28 
29 # include <mln/fun/unary.hh>
30 # include <mln/value/concept/scalar.hh>
31 # include <mln/math/abs.hh>
32 
33 namespace mln
34 {
35 
36  // Absolute value, pure
37  namespace fun
38  {
39  struct abs : unary<abs> {};
40  }
41 
42  namespace trait
43  {
44 
45  namespace next
46  {
47 
48  template <typename T>
49  struct set_unary_<mln::fun::abs, mln::value::Scalar, T>
50  {
51  typedef set_unary_ ret;
52  typedef T result;
53  typedef T argument;
54 
55  static result read(const argument& x)
56  {
57  return math::abs(x);
58  }
59  };
60 
61  } // end of namespace mln::trait::next
62 
63  } // end of namespace mln::trait
64 
65 } // end of namespace mln
66 
67 #endif /* ! MLN_FUN_MATH_ABS_HH */