WCSNCASECMPSection: Linux Programmer's Manual (3)
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NAMEwcsncasecmp - compare two fixed-size wide-character strings, ignoring case
#define _GNU_SOURCE #include <wchar.h> int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);
DESCRIPTIONThe wcsncasecmp() function is the wide-character equivalent of the strncasecmp(3) function. It compares the wide-character string pointed to by s1 and the wide-character string pointed to by s2, but at most n wide characters from each string, ignoring case differences (towupper(3), towlower(3)).
RETURN VALUEThe wcsncasecmp() function returns zero if the wide-character strings at s1 and s2, truncated to at most length n, are equal except for case distinctions. It returns a positive integer if truncated s1 is greater than truncated s2, ignoring case. It returns a negative integer if truncated s1 is smaller than truncated s2, ignoring case.
CONFORMING TOPOSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.
NOTESThe behavior of wcsncasecmp() depends on the LC_CTYPE category of the current locale.
SEE ALSOstrncasecmp(3), wcsncmp(3)
COLOPHONThis page is part of release 3.21 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.