message: Mark default ctor host/device for hcc
diff: @@ -25,7 +25,7 @@ public:
  vec_type ori;
  vec_type dir;
  - basic_ray() = default;
  + MATH_FUNC basic_ray() = default;
  MATH_FUNC basic_ray(vector<3, T> const& o, vector<3, T> const& d);
  };
  