28 Text processing library [text]

28.4 Text encodings identification [text.encoding]

28.4.2 Class text_encoding [text.encoding.class]

28.4.2.4 Comparison functions [text.encoding.cmp]

friend constexpr bool operator==(const text_encoding& a, const text_encoding& b) noexcept;
Returns: If a.mib_ == id​::​other && b.mib_ == id​::​other is true, then comp-name(a.name_,
b.name_)
.
Otherwise, a.mib_ == b.mib_.
friend constexpr bool operator==(const text_encoding& encoding, id i) noexcept;
Returns: encoding.mib_ == i.
Remarks: This operator induces an equivalence relation on its arguments if and only if i != id​::​other is true.