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- /* This is file INDEX.C */
- /* This file may have been modified by DJ Delorie (Jan 1991). If so,
- ** these modifications are Coyright (C) 1993 DJ Delorie, 24 Kirsten Ave,
- ** Rochester NH, 03867-2954, USA.
- */
-
- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)index.c 5.6 (Berkeley) 6/23/90";
- #endif /* LIBC_SCCS and not lint */
-
- #include <string.h>
- #include <stddef.h>
-
- char *
- #ifdef STRCHR
- strchr(p, ch)
- #else
- index(p, ch)
- #endif
- register const char *p, ch;
- {
- for (;; ++p) {
- if (*p == ch)
- return(p);
- if (!*p)
- return((char *)NULL);
- }
- /* NOTREACHED */
- }
-