19 Diagnostics library [diagnostics]

19.5 System error support [syserr]

19.5.4 Comparison operators [syserr.compare]

bool operator==(const error_code& lhs, const error_code& rhs) noexcept;

1

Returns: lhs.category() == rhs.category() && lhs.value() == rhs.value().

bool operator==(const error_code& lhs, const error_condition& rhs) noexcept;

2

Returns: lhs.category().equivalent(lhs.value(), rhs) || rhs.category().equivalent(lhs, rhs.value()).

bool operator==(const error_condition& lhs, const error_code& rhs) noexcept;

3

Returns: rhs.category().equivalent(rhs.value(), lhs) || lhs.category().equivalent(rhs, lhs.value()).

bool operator==(const error_condition& lhs, const error_condition& rhs) noexcept;

4

Returns: lhs.category() == rhs.category() && lhs.value() == rhs.value().

bool operator!=(const error_code& lhs, const error_code& rhs) noexcept; bool operator!=(const error_code& lhs, const error_condition& rhs) noexcept; bool operator!=(const error_condition& lhs, const error_code& rhs) noexcept; bool operator!=(const error_condition& lhs, const error_condition& rhs) noexcept;

5

Returns: !(lhs == rhs).