wcsrchr.c 1.7 KB

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  1. /* $OpenBSD: wcsrchr.c,v 1.5 2015/10/01 02:32:07 guenther Exp $ */
  2. /* $NetBSD: wcsrchr.c,v 1.2 2001/01/03 14:29:37 lukem Exp $ */
  3. /*-
  4. * Copyright (c)1999 Citrus Project,
  5. * All rights reserved.
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions
  9. * are met:
  10. * 1. Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  12. * 2. Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in the
  14. * documentation and/or other materials provided with the distribution.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26. * SUCH DAMAGE.
  27. *
  28. * citrus Id: wcsrchr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
  29. */
  30. #include <wchar.h>
  31. wchar_t *
  32. wcsrchr(const wchar_t *s, wchar_t c)
  33. {
  34. const wchar_t *p;
  35. p = s;
  36. while (*p)
  37. p++;
  38. while (s <= p) {
  39. if (*p == c) {
  40. return (wchar_t *)p;
  41. }
  42. p--;
  43. }
  44. return NULL;
  45. }