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- #ifdef __STDC__
- static char sccs_id[] = "@(#) strstr.c 1.1 " __DATE__ " HJR";
- #else
- static char sccs_id[] = "@(#) strstr.c 1.1 26/9/90 HJR";
- #endif
-
- /* strstr.c (c) Copyright 1990 H.Rogers */
-
- #ifndef __STDC__
- #include "sys/types.h"
- #endif
- #include <string.h>
-
- #ifdef __STDC__
- char *
- strstr (register const char *s1, register const char *s2)
- #else
- char *
- strstr (s1, s2)
- register const char *s1;
- register const char *s2;
- #endif
- {
- register int l1 = strlen (s1), l2 = strlen (s2);
- register const char *e1 = s1 + l1 - l2;
-
- while (s1 < e1)
- {
- if (!strncmp (s1, s2, l2))
- return ((char *) s1);
- s1++;
- }
-
- return (0);
- }
-