MBLEN(3) BSD Library Functions Manual MBLEN(3)NAME
mblen -- get number of bytes in a character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
mblen(const char *mbchar, size_t nbytes);
DESCRIPTION
The mblen() function computes the length in bytes of a multibyte character mbchar according to the current conversion state. Up to nbytes
bytes are examined.
A call with a null mbchar pointer returns nonzero if the current locale requires shift states, zero otherwise; if shift states are required,
the shift state is reset to the initial state.
RETURN VALUES
If mbchar is NULL, the mblen() function returns nonzero if shift states are supported, zero otherwise.
Otherwise, if mbchar is not a null pointer, mblen() either returns 0 if mbchar represents the null wide character, or returns the number of
bytes processed in mbchar, or returns -1 if no multibyte character could be recognized or converted. In this case, mblen()'s internal con-
version state is undefined.
ERRORS
The mblen() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is not valid.
SEE ALSO mbrlen(3), mbtowc(3), multibyte(3)STANDARDS
The mblen() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD April 11, 2004 BSD
Check Out this Related Man Page
WCTOMB(3) BSD Library Functions Manual WCTOMB(3)NAME
wctomb -- convert a wide-character code to a character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
wctomb(char *mbchar, wchar_t wchar);
DESCRIPTION
The wctomb() function converts a wide character wchar into a multibyte character and stores the result in mbchar. The object pointed to by
mbchar must be large enough to accommodate the multibyte character, which may be up to MB_LEN_MAX bytes.
A call with a null mbchar pointer returns nonzero if the current locale requires shift states, zero otherwise; if shift states are required,
the shift state is reset to the initial state.
RETURN VALUES
If mbchar is NULL, the wctomb() function returns nonzero if shift states are supported, zero otherwise. If mbchar is valid, wctomb() returns
the number of bytes processed in mbchar, or -1 if no multibyte character could be recognized or converted. In this case, wctomb()'s internal
conversion state is undefined.
ERRORS
The wctomb() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is invalid.
SEE ALSO mbtowc(3), wcrtomb(3), wcstombs(3), wctob(3)STANDARDS
The wctomb() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD April 8, 2004 BSD
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