[unix-history] / usr / src / usr.bin / f77 / libU77 / ftell_.c

/*
char id_ftell[] = "@(#)ftell_.c	1.2";
 *
 * return current file position
 *
 * calling sequence:
 *	integer curpos, ftell
 *	curpos = ftell(lunit)
 * where:
 *	lunit is an open logical unit
 *	curpos will be the current offset in bytes from the start of the
 *		file associated with that logical unit
 *		or a (negative) system error code.
 */

#include	"../libI77/fiodefs.h"
#include	"../libI77/f_errno.h"

extern unit units[];

long ftell_(lu)
long *lu;
{
	if (*lu < 0 || *lu >= MXUNIT)
		return(-(long)(errno=F_ERUNIT));
	if (!units[*lu].ufd)
		return(-(long)(errno=F_ERNOPEN));
	return(ftell(units[*lu].ufd));
}
Commit	Line	Data
4843742a	1	/*
abb67f25	2	char id_ftell[] = "@(#)ftell_.c 1.2";
4843742a DW	3	*
	4	* return current file position
	5	*
	6	* calling sequence:
	7	* integer curpos, ftell
	8	* curpos = ftell(lunit)
	9	* where:
	10	* lunit is an open logical unit
	11	* curpos will be the current offset in bytes from the start of the
	12	* file associated with that logical unit
	13	* or a (negative) system error code.
	14	*/
	15
	16	#include "../libI77/fiodefs.h"
	17	#include "../libI77/f_errno.h"
	18
	19	extern unit units[];
	20
	21	long ftell_(lu)
	22	long *lu;
	23	{
	24	if (lu < 0 \|\| lu >= MXUNIT)
abb67f25	25	return(-(long)(errno=F_ERUNIT));
4843742a DW	26	if (!units[*lu].ufd)
	27	return(-(long)(errno=F_ERNOPEN));
	28	return(ftell(units[*lu].ufd));
	29	}