MB_LEN_MAX man page

MB_LEN_MAX ā€” maximum multibyte length of a character across all locales


#include <limits.h>


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.


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



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Referenced By


2015-07-23 Linux Programmer's Manual