#ifndef __AR_H#define __AR_H#ifndef _RESEARCH_SOURCE   This header file is not defined in ANSI or POSIX#endif #define	ARMAG	"!<arch>\n"#define	SARMAG	8 #define	ARFMAG	"`\n" struct	ar_hdr{	char	ar_name[16];	char	ar_date[12];	char	ar_uid[6];	char	ar_gid[6];	char	ar_mode[8];	char	ar_size[10];	char	ar_fmag[2];};#define	SAR_HDR	60 #endif