Manual Section... (3) - page: MB_LEN_MAX
NAMEMB_LEN_MAX - maximum multibyte length of a character across all locales
DESCRIPTIONThe MB_LEN_MAX macro is the upper bound for the number of bytes needed to represent a single wide character, across all locales.
RETURN VALUEA constant integer greater than zero.
CONFORMING TOC99, POSIX.1-2001.
NOTESThe entities MB_LEN_MAX and sizeof(wchar_t) are totally unrelated. In glibc, MB_LEN_MAX is typically 6 while sizeof(wchar_t) is 4.
COLOPHONThis page is part of release 3.24 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
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Time: 15:27:02 GMT, June 11, 2010