Standard C Library Functions mblen(3C)
NAME
mblen - get number of bytes in a character
SYNOPSIS
#include
int mblen(const char *s, size_t n);
DESCRIPTION
If s is not a null pointer, mblen() determines the number of
bytes constituting the character pointed to by s. It is equivalent to:mbtowc((wchar_t *)0, s, n);
A call with s as a null pointer causes this function to return 0. The behavior of this function is affected by theLC_CTYPE category of the current locale.
RETURN VALUES
If s is a null pointer, mblen() returns 0. It s is not a
null pointer, mblen() returns 0 (if s points to the null
byte), the number of bytes that constitute the character (ifthe next n or fewer bytes form a valid character), or -1
(if they do not form a valid character) and may set errno to indicate the error. In no case will the value returned begreater than n or the value of the MB_CUR_MAX macro.
ERRORS
The mblen() function may fail if:
EILSEQ Invalid character sequence is detected.USAGE
The mblen() function can be used safely in multithreaded
applications, as long as setlocale(3C) is not being called to change the locale.ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:SunOS 5.11 Last change: 24 Jul 2002 1
Standard C Library Functions mblen(3C)
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| CSI | Enabled ||_____________________________|_____________________________|
| Interface Stability | Standard ||_____________________________|_____________________________|
| MT-Level | MT-Safe with exceptions |
|_____________________________|_____________________________|
SEE ALSO
mbstowcs(3C), mbtowc(3C), setlocale(3C), wcstombs(3C), wctomb(3C), attributes(5), standards(5)SunOS 5.11 Last change: 24 Jul 2002 2