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Subclause

Header

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[charconv]

Primitive numeric conversions

<charconv>

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[localization]

Localization library

<locale>, <clocale>

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[format]

Formatting

<format>

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[text.encoding]

Text encodings identification

<text_encoding>

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[re]

Regular expressions library

<regex>

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[text.c.strings]

Null-terminated sequence utilities

<cctype>, <cstdlib>, <cuchar>, <cwchar>, <cwctype>