MB_LEN_MAX(3) Linux Programmer's Manual MB_LEN_MAX(3)
MB_LEN_MAX - maximum multibyte length of a character across all locales
The MB_LEN_MAX macro is the upper bound for the 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.
This page is part of release 4.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2015-07-23 MB_LEN_MAX(3)
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