src/system/libroot/posix/wchar/wcsncasecmp.c

   1 /*
   2 ** Copyright 2011, Oliver Tappe, zooey@hirschkaefer.de. All rights reserved.
   3 ** Distributed under the terms of the Haiku License.
   4 */
   5
   6 #include <wctype.h>
   7
   8 #include <wchar_private.h>
   9
  10
  11 int
  12 __wcsncasecmp(const wchar_t* wcs1, const wchar_t* wcs2, size_t count)
  13 {
  14         int cmp = 0;
  15
  16         while (count-- > 0) {
  17                 cmp = towlower(*wcs1) - towlower(*wcs2++);
  18                         /* note: won't overflow, since our wchar_t is guaranteed to never
  19                            have the highest bit set */
  20
  21                 if (cmp != 0 || *wcs1++ == L'\0')
  22                         break;
  23         }
  24
  25         return cmp;
  26 }
  27
  28
  29 B_DEFINE_WEAK_ALIAS(__wcsncasecmp, wcsncasecmp);