deltat = tstart_writing - tnow + (1.0 * (tnow - tstart_writing))
/ blockswritten * tapesize;
(void)snprintf(msgbuf, sizeof(msgbuf),
deltat = tstart_writing - tnow + (1.0 * (tnow - tstart_writing))
/ blockswritten * tapesize;
(void)snprintf(msgbuf, sizeof(msgbuf),