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Annotation of 43BSDReno/lib/libc/string/index.c, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1990 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted provided
                      6:  * that: (1) source distributions retain this entire copyright notice and
                      7:  * comment, and (2) distributions including binaries display the following
                      8:  * acknowledgement:  ``This product includes software developed by the
                      9:  * University of California, Berkeley and its contributors'' in the
                     10:  * documentation or other materials provided with the distribution and in
                     11:  * all advertising materials mentioning features or use of this software.
                     12:  * Neither the name of the University nor the names of its contributors may
                     13:  * be used to endorse or promote products derived from this software without
                     14:  * specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #if defined(LIBC_SCCS) && !defined(lint)
                     21: static char sccsid[] = "@(#)index.c    5.6 (Berkeley) 6/23/90";
                     22: #endif /* LIBC_SCCS and not lint */
                     23: 
                     24: #include <string.h>
                     25: #include <stddef.h>
                     26: 
                     27: char *
                     28: #ifdef STRCHR
                     29: strchr(p, ch)
                     30: #else
                     31: index(p, ch)
                     32: #endif
                     33:        register char *p, ch;
                     34: {
                     35:        for (;; ++p) {
                     36:                if (*p == ch)
                     37:                        return(p);
                     38:                if (!*p)
                     39:                        return((char *)NULL);
                     40:        }
                     41:        /* NOTREACHED */
                     42: }

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