MBLEN(3) 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 re- quires 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 rec- ognized or converted. In this case, mblen()'s internal conversion 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"). FreeBSD 15.1 April 11, 2004 MBLEN(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS
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