MB_LEN_MAX(3) Library Functions Manual MB_LEN_MAX(3) NAME MB_LEN_MAX - maximum multibyte length of a character across all locales LIBRARY Standard C library (libc) SYNOPSIS #include <limits.h> DESCRIPTION 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. STANDARDS POSIX.1-2001, POSIX.1-2008, C99. NOTES 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 MB_CUR_MAX(3) Linux man-pages 6.03 2022-10-09 MB_LEN_MAX(3)
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