__PURE
extern size_t strlen(const char *) __PURE;
extern size_t strnlen(const char *, size_t) __PURE;
extern int strcmp(const char *, const char *) __PURE;
extern int strncmp(const char *, const char *, size_t) __PURE;
extern int bcmp(const void *, const void *, size_t) __PURE;
extern int memcmp(const void *, const void *, size_t) __PURE;
extern size_t strlen(const char *) __PURE;
extern size_t strnlen(const char *, size_t) __PURE;
extern int strcmp(const char *, const char *) __PURE;
extern int strncmp(const char *, const char *, size_t) __PURE;
extern int bcmp(const void *, const void *, size_t) __PURE;
extern int memcmp(const void *, const void *, size_t) __PURE;
extern size_t strlen(const char *) __PURE;
extern size_t strnlen(const char *, size_t) __PURE;
extern int strcmp(const char *, const char *) __PURE;
extern int strncmp(const char *, const char *, size_t) __PURE;
extern int bcmp(const void *, const void *, size_t) __PURE;
extern int memcmp(const void *, const void *, size_t) __PURE;
int bcmp(const void *, const void *, size_t) __PURE;
size_t strlen(const char *) __PURE;
int strcmp(const char *, const char *) __PURE;
int strncmp(const char *, const char *, size_t) __PURE;
int strcasecmp(const char *, const char *) __PURE;
int strncasecmp(const char *, const char *, size_t) __PURE;