19 Diagnostics library [diagnostics]

19.2 Exception classes [std.exceptions]

19.2.11 Class underflow_error [underflow.error]

namespace std { class underflow_error : public runtime_error { public: explicit underflow_error(const string& what_arg); explicit underflow_error(const char* what_arg); }; }
The class underflow_error defines the type of objects thrown as exceptions to report an arithmetic underflow error.
underflow_error(const string& what_arg);
Postconditions: strcmp(what(), what_arg.c_str()) == 0.
underflow_error(const char* what_arg);
Postconditions: strcmp(what(), what_arg) == 0.