VMS Help CC, Run-time functions, wcscoll  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Compares two wide-character strings.  The function returns an
  integer that indicates if the strings differ and how they differ.
  The function uses the collating information in the LC_COLLATE
  category of the current locale to determine how the comparison is
  performed.

  Syntax:

       #include <wchar.h>

       int wcscoll (const wchar_t *ws1, const wchar_t *ws2);