1 /* 2 * Copyright (c) 1985 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)strspn.c 5.5 (Berkeley) 05/17/90"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include <string.h> 23 24 strspn(s, set) 25 register char *s, *set; 26 { 27 register n = 0; 28 register char *p; 29 register c; 30 31 while (c = *s++) { 32 for (p = set; *p; p++) 33 if (c == *p) 34 break; 35 if (!*p) 36 return (n); 37 n++; 38 } 39 return (n); 40 } 41