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 maximum number of bytes needed to represent a single wide character, in any of the supported locales.

RETURN VALUE
       A constant integer greater than zero.

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C99.

NOTES
       The  entities  MB_LEN_MAX  and  sizeof(wchar_t)  are  totally  unrelated.   In  glibc,  MB_LEN_MAX  is typically 16 (6 in glibc versions earlier than 2.2), while
       sizeof(wchar_t) is 4.

SEE ALSO
       MB_CUR_MAX(3)

Linux                                                                          2015-07-23                                                                  MB_LEN_MAX(3)