56   PetscErrorCode to_string(std::string &buf) const noexcept  in to_string()  function
59     PetscCallCXX(buf = std::to_string(x) + ", " + std::to_string(y));  in to_string()
68     PetscCallAbort(PETSC_COMM_SELF, f.to_string(ret));  in operator <<()
86   PetscErrorCode to_string(std::string &buf) const noexcept  in to_string()  function
91       PetscCallCXX(buf += std::to_string(x[i]));  in to_string()
103     PetscCallAbort(PETSC_COMM_SELF, b.to_string(ret));  in operator <<()
660       PetscCallCXX(buf = std::to_string(key));  in main()
665       PetscCallCXX(buf = std::to_string(value));  in main()
670       PetscCall(key.to_string(buf));  in main()
675       PetscCall(value.to_string(buf));  in main()
680 … PetscCallCXX(buf = '<' + std::to_string(value.first) + ", " + std::to_string(value.second) + '>');  in main()
711       auto ret = Bar{std::move(x), std::to_string(isize)};  in main()