ipp_tag_string
extern char *ipp_tag_string(int8_t tag, char *buf, size_t bufsiz);
#define _ipp_tag_string(id) ipp_tag_string((id), buf, sizeof (buf))
(void) ipp_tag_string(*type, name, sizeof (name));
(void) ipp_tag_string(c, name, sizeof (name));