/sys$common/syshlp/helplib.hlb CC, Run-time functions, strcoll  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Compares two strings and 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 <string.h>

       int strcoll(const char *str_1, const char *str_2);