MB_LEN_MAX(X) Linux Programmer's Manual MB_LEN_MAX(X) 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(X) Linux 1999-07-04 MB_LEN_MAX(X)