30 Localization library [localization]

30.4 Standard locale categories [locale.categories]

30.4.2 The ctype category [category.ctype]

30.4.2.4 ctype<char> specialization [facet.ctype.special]

30.4.2.4.4 Static members [facet.ctype.char.statics]

static const mask* classic_table() noexcept;
Returns: A pointer to the initial element of an array of size table_­size which represents the classifications of characters in the "C" locale.