MB_LEN_MAX(3) Linux Programmer's Manual MB_LEN_MAX(3)

MB_LEN_MAX - 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.

A constant integer greater than zero.

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.

MB_CUR_MAX(3)

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2015-07-23 Linux