reactos/lib/sdk/crt/string/strnicmp.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <precomp.h>
   3
   4 /*
   5  * @implemented
   6  */
   7 int _strnicmp(const char *s1, const char *s2, size_t n)
   8 {
   9
  10   if (n == 0)
  11     return 0;
  12   do {
  13     if (toupper(*s1) != toupper(*s2++))
  14       return toupper(*(unsigned const char *)s1) - toupper(*(unsigned const char *)--s2);
  15     if (*s1++ == 0)
  16       break;
  17   } while (--n != 0);
  18   return 0;
  19 }