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

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<cuchar> (C++11)

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C compatibility
<cstdbool> (C++11/17/20*)  
<ccomplex> (C++11/17/20*)
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<cstdalign> (C++11/17/20*)

<ciso646> (until C++20)

 

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

conversion state information necessary to iterate multibyte character strings
(class)
unsigned integer type returned by the sizeof operator
(typedef)

Functions

(C++11)
converts a narrow multibyte character to UTF-16 encoding
(function)
(C++11)
convert a 16-bit wide character to narrow multibyte string
(function)
(C++11)
converts a narrow multibyte character to UTF-32 encoding
(function)
(C++11)
convert a 32-bit wide character to narrow multibyte string
(function)
(C++20)
converts a narrow multibyte character to UTF-8 encoding
(function)
(C++20)
converts UTF-8 string to narrow multibyte encoding
(function)

Synopsis

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);
}