size_t strnlen (const char *, size_t);
char *strdup (const char *);
char *strndup (const char *, size_t);
size_t strnlen (const char *, size_t);
char *strdup (const char *);
char *strndup (const char *, size_t);
int strcasecmp (const char *, const char *);
int strncasecmp (const char *, const char *, size_t);
char *strchrnul(const char *, int);
char *strcasestr(const char *, const char *);
int strcasecmp (const char *, const char *);
int strncasecmp (const char *, const char *, size_t);
char *strchrnul(const char *, int);
char *strcasestr(const char *, const char *);
+char *strsep(char **, const char *);
+void *memrchr(const void *, int, size_t);
+void *mempcpy(void *, const void *, size_t);