std::clog << o("-b") << "activate bookkeeping\n";
std::clog << oo("-c", "[fn,...]f0")
<< "polynomial factors for computation cost ("
<< opt::comp_cost.to_string() << ")\n";
std::clog << o("-b") << "activate bookkeeping\n";
std::clog << oo("-c", "[fn,...]f0")
<< "polynomial factors for computation cost ("
<< opt::comp_cost.to_string() << ")\n";