wcslen.c 1.2 KB

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  1. /* Copyright (C) 1995-2026 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <https://www.gnu.org/licenses/>. */
  14. #include <wchar.h>
  15. /* Return length of string S. */
  16. #ifdef WCSLEN
  17. # define __wcslen WCSLEN
  18. #endif
  19. size_t
  20. __wcslen (const wchar_t *s)
  21. {
  22. size_t len = 0;
  23. while (s[len] != L'\0')
  24. {
  25. if (s[++len] == L'\0')
  26. return len;
  27. if (s[++len] == L'\0')
  28. return len;
  29. if (s[++len] == L'\0')
  30. return len;
  31. ++len;
  32. }
  33. return len;
  34. }
  35. #ifndef WCSLEN
  36. weak_alias (__wcslen, wcslen)
  37. #endif