11/3/71 SYS TELL (II)





11/3/71                                             SYS TELL (II)





NAME            tell -- get file pointer



SYNOPSIS        (file descriptor in r0)

                sys     tell; offset; ptrname   / tell = 20.

                (value retruned in r0)



DESCRIPTION     The file descriptor refers to an open file.  The

                value returned in r0 is one of:



                   if ptrname is 0, the value returned is offset;



                   if ptrname is 1, the value is the current

                   pointer plus offset;



                   if ptrname is 2, the value returned is the

                   number of bytes in the file plus offset.



FILES           --



SEE ALSO        seek



DIAGNOSTICS     The error bit (c-bit) is set if the file descrip-

                tor is unknown.



BUGS            Tell doesn't work. Complain if you need it.



OWNER           ken, dmr
squoze.net
