minix/lib/libc/ansi/strstr.c

19 lines
464 B
C

/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Header$ */
#include <string.h>
char *
strstr(register const char *s, register const char *wanted)
{
register const size_t len = strlen(wanted);
if (len == 0) return (char *)s;
while (*s != *wanted || strncmp(s, wanted, len))
if (*s++ == '\0')
return (char *)NULL;
return (char *)s;
}