5.47 wcsncasecmp—case-insensitive wide character string compare

Synopsis

     #include <wchar.h>
     int wcsncasecmp(const wchar_t *a, const wchar_t * b, size_t length);
     

Description
wcsncasecmp compares up to length wide characters from the string at a to the string at b in a case-insensitive manner.

If *a sorts lexicographically after *b (after both are converted to uppercase), wcsncasecmp returns a number greater than zero. If the two strings are equivalent, wcsncasecmp returns zero. If *a sorts lexicographically before *b, wcsncasecmp returns a number less than zero.

wcsncasecmp requires no supporting OS subroutines. It uses tolower() from elsewhere in this library.