[clocale.syn]

namespace std { struct lconv; char* setlocale(int category, const char* locale); lconv* localeconv(); } #define NULL see [support.types.nullptr] #define LC_ALL see below #define LC_COLLATE see below #define LC_CTYPE see below #define LC_MONETARY see below #define LC_NUMERIC see below #define LC_TIME see below

The contents and meaning of the header are the same as the C standard library header <locale.h>.

28 Localization library [localization]

28.5 C library locales [c.locales]

28.5.1 Header <clocale> synopsis [clocale.syn]