Standard library header <cuchar> (C++11)

This header was originally in the C standard library as <uchar.h>.

This header is part of the null-terminated multibyte strings library.

Macros
__STDC_UTF_16__ (C++11)	indicates that UTF-16 encoding is used by mbrtoc16 and c16rtomb (macro constant)
__STDC_UTF_32__ (C++11)	indicates that UTF-32 encoding is used by mbrtoc32 and c32rtomb (macro constant)
Types
mbstate_t	conversion state information necessary to iterate multibyte character strings (class)
size_t	unsigned integer type returned by the sizeof operator (typedef)
Functions
mbrtoc16 (C++11)	converts a narrow multibyte character to UTF-16 encoding (function)
c16rtomb (C++11)	converts a UTF-16 character to narrow multibyte encoding (function)
mbrtoc32 (C++11)	converts a narrow multibyte character to UTF-32 encoding (function)
c32rtomb (C++11)	converts a UTF-32 character to narrow multibyte encoding (function)
mbrtoc8 (C++20)	converts a narrow multibyte character to UTF-8 encoding (function)
c8rtomb (C++20)	converts UTF-8 string to narrow multibyte encoding (function)

Synopsis

#define __STDC_VERSION_UCHAR_H__ 202311L

namespace std {
  using mbstate_t = /* see description */;
  using size_t = /* see description */;

  size_t mbrtoc8(char8_t* pc8, const char* s, size_t n, mbstate_t* ps);
  size_t c8rtomb(char* s, char8_t c8, mbstate_t* ps);
  size_t mbrtoc16(char16_t* pc16, const char* s, size_t n, mbstate_t* ps);
  size_t c16rtomb(char* s, char16_t c16, mbstate_t* ps);
  size_t mbrtoc32(char32_t* pc32, const char* s, size_t n, mbstate_t* ps);
  size_t c32rtomb(char* s, char32_t c32, mbstate_t* ps);
}