-// friends
-
- friend color color_ONE(unsigned const rl);
- friend color color_T(ex const & a, unsigned const rl);
- friend color color_f(ex const & a, ex const & b, ex const & c);
- friend color color_d(ex const & a, ex const & b, ex const & c);
- friend ex color_h(ex const & a, ex const & b, ex const & c);
- friend color color_delta8(ex const & a, ex const & b);
- friend unsigned subs_index_in_exvector(exvector & v, ex const & is, ex const & ir);
- friend void split_color_string_in_parts(exvector const & v, exvector & delta8vec,
- exvector & fvec, exvector & dvec,
- vector<exvector> & Tvecs,
- vector<exvector> & ONEvecs,
- exvector & unknownvec);
- friend exvector recombine_color_string(exvector & delta8vec, exvector & fvec,
- exvector & dvec, vector<exvector> & Tvecs,
- vector<exvector> & ONEvecs, exvector & unknownvec);
- friend ex color_trace_of_one_representation_label(exvector const & v);
- friend ex color_trace(exvector const & v, unsigned const rl);
- friend ex simplify_pure_color_string(ex const & e);
- friend ex simplify_color(ex const & e);
-
-
-// types