Stable Numerics Subroutine Library
Programming Reference Manual
Version 1.1 DD-00006-011

8.5.3 std::operator» - Input stream

The input stream operator std::operator» is implemented by default for triplex<T>. If an error occurs during parsing the failbit of the std::istream will be set, which may throw the std::ios_base::failure exception if it has been enabled.