text: cdef extern from "<strings.h>" nogil:
      int    bcmp(const void *, const void *, size_t)
      void   bcopy(const void *, void *, size_t)
      void   bzero(void *, size_t)
      int    ffs(int)
      char   *index(const char *, int)
      char   *rindex(const char *, int)
      int    strcasecmp(const char *, const char *)
      int    strncasecmp(const char *, const char *, size_t)
  