operator==,!=,<(std::error_condition)
Defined in header <system_error> | ||
|---|---|---|
bool operator==( const error_condition& lhs, const error_condition& rhs ) noexcept; | (1) | (since C++11) |
bool operator!=( const error_condition& lhs, const error_condition& rhs ) noexcept; | (2) | (since C++11) |
bool operator<( const error_condition& lhs, const error_condition& rhs ) noexcept; | (3) | (since C++11) |
bool operator==( const error_code& code, const error_condition& cond ) noexcept; | (4) | (since C++11) |
bool operator==( const error_condition& cond, const error_code& code ) noexcept; | (4) | (since C++11) |
bool operator!=( const error_code& code, const error_condition& cond ) noexcept; | (5) | (since C++11) |
bool operator!=( const error_condition& cond, const error_code& code ) noexcept; | (5) | (since C++11) |
Compares two error conditions.
1) Checks whether
lhs and rhs are equal.
2) Checks whether
lhs and rhs are not equal.
3) Checks whether
lhs is less than rhs.
4) Checks whether
code is a semantic match for cond.
5) Checks whether
code is not a semantic match for cond.Parameters
| lhs, rhs | - | error conditions to compare |
Return value
1)
true if the error category and error value compare equal.
2)
true if the error category or error value compare are not equal.
3)
true if lhs.category() < rhs.category(). Otherwise, true if lhs.category() == rhs.category() && lhs.value() < rhs.value(). Otherwise, false.
4)
true if either code.category().equivalent(code.value(), cond) or cond.category().equivalent(code, cond.value()).
5)
true if neither code.category().equivalent(code.value(), cond) nor cond.category().equivalent(code, cond.value()).See also
|
[virtual] | compares error_code and error_condition for equivalence (virtual public member function of std::error_category) |
compares two error_codes (function) |
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