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Annotation of researchv10no/cmd/worm/scsi/tcl/strchr.c, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * strchr.c --
                      3:  *
                      4:  *     Source code for the "strchr" library routine.
                      5:  *
                      6:  * Copyright 1988 Regents of the University of California
                      7:  * Permission to use, copy, modify, and distribute this
                      8:  * software and its documentation for any purpose and without
                      9:  * fee is hereby granted, provided that the above copyright
                     10:  * notice appear in all copies.  The University of California
                     11:  * makes no representations about the suitability of this
                     12:  * software for any purpose.  It is provided "as is" without
                     13:  * express or implied warranty.
                     14:  */
                     15: 
                     16: #ifndef lint
                     17: static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strchr.c,v 1.2 89/03/22 16:06:40 rab Exp $ SPRITE (Berkeley)";
                     18: #endif /* not lint */
                     19: 
                     20: #include <string.h>
                     21: 
                     22: /*
                     23:  *----------------------------------------------------------------------
                     24:  *
                     25:  * strchr --
                     26:  *
                     27:  *     Locate the first appearance of a character in a string.
                     28:  *
                     29:  * Results:
                     30:  *     The return value is the address of the first appearance
                     31:  *     in string of c.  If c doesn't appear in string then 0
                     32:  *     is returned.
                     33:  *
                     34:  * Side effects:
                     35:  *     None.
                     36:  *
                     37:  *----------------------------------------------------------------------
                     38:  */
                     39: 
                     40: char *
                     41: strchr(string, c)
                     42:     register char *string;             /* String to search. */
                     43:     register char c;                   /* Desired character. */
                     44: {
                     45:     while (1) {
                     46:        if (*string == c) {
                     47:            return string;
                     48:        }
                     49:        if (*string++ == 0) {
                     50:            return (char *) 0;
                     51:        }
                     52:     }
                     53: }

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