MB_LEN_MAX(3) Linux Programmer's Manual MB_LEN_MAX(3)
NAME
MB_LEN_MAX - maximum multibyte length of a character across all locales
SYNOPSIS
#include <limits.h>
DESCRIPTION
The MB_LEN_MAX macro is the upper bound for the number of bytes needed to represent a single wide character, across all locales.
RETURN VALUE
A constant integer >= 1.
CONFORMING TO
ANSI C, POSIX.1
NOTES
The entities MB_LEN_MAX and sizeof(wchar_t) are totally unrelated. In the GNU libc, MB_LEN_MAX is typically 6 while sizeof(wchar_t) is 4.
SEE ALSO
MB_CUR_MAX(3)
Linux 1999-07-04 MB_LEN_MAX(3)