xref: /csrg-svn/lib/libc/string/strspn.c (revision 26537)
124190Skre /*
224190Skre  * Copyright (c) 1985 Regents of the University of California.
324190Skre  * All rights reserved.  The Berkeley software License Agreement
424190Skre  * specifies the terms and conditions for redistribution.
524190Skre  */
624190Skre 
724190Skre /*
824190Skre  * Sys5 compat routine
924190Skre  */
1024190Skre 
11*26537Sdonn #if defined(LIBC_SCCS) && !defined(lint)
12*26537Sdonn static char sccsid[] = "@(#)strspn.c	5.2 (Berkeley) 86/03/09";
1324190Skre #endif
1424190Skre 
1524190Skre strspn(s, set)
1624190Skre 	register char *s, *set;
1724190Skre {
1824190Skre 	register n = 0;
1924190Skre 	register char *p;
2024190Skre 	register c;
2124190Skre 
2224190Skre 	while (c = *s++) {
2324190Skre 		for (p = set; *p; p++)
2424190Skre 			if (c == *p)
2524190Skre 				break;
2624190Skre 		if (!*p)
2724190Skre 			return (n);
2824190Skre 		n++;
2924190Skre 	}
3024190Skre 	return (n);
3124190Skre }
32