int str_casecmp (const char*, const char*);
int str_ncmp (const char*, const char*, size_t);
int str_ncasecmp (const char*, const char*, size_t);
int str_coll (const char*, const char*);
int str_casecmp (const char*, const char*);
int str_ncmp (const char*, const char*, size_t);
int str_ncasecmp (const char*, const char*, size_t);
int str_coll (const char*, const char*);