cppdraft_translate/cppdraft/syserr/compare.md

[syserr.compare]

19 Diagnostics library [diagnostics]

19.5 System error support [syserr]

19.5.6 Comparison operator functions [syserr.compare]

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

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

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

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

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

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

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strong_ordering operator<=>(const error_code& lhs, const error_code& rhs) noexcept;

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Effects: Equivalent to:if (auto c = lhs.category() <=> rhs.category(); c != 0) return c;return lhs.value() <=> rhs.value();

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strong_ordering operator<=>(const error_condition& lhs, const error_condition& rhs) noexcept;

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Returns: if (auto c = lhs.category() <=> rhs.category(); c != 0) return c;return lhs.value() <=> rhs.value();