15 #ifndef polybori_ring_CVariableNames_h_
16 #define polybori_ring_CVariableNames_h_
71 return m_data[idx].c_str();
84 m_data[idx] = varname;
99 for (; idx < nlen; ++idx){
100 std::ostringstream sstrg;
101 sstrg <<
"x(" << idx <<
')';
102 m_data[idx] = sstrg.str();