/*
*       timeout.c - Timeout calculation/checking functions.
*
*	Based on timeout.asm.
*
*	
*/

extern unsigned long far *realclock;	/* PCTCP.C */
static unsigned long date;
static char oldhour;

#define MAXTICKS 0x1800b0L

unsigned long
set_ttimeout(unsigned int ticks)
{
	return(*realclock + date + ticks);
}

unsigned long set_timeout(unsigned int seconds)
{
	return(*realclock + date + (((unsigned long)seconds * 1165L) >> 6));
}

int
chk_timeout(unsigned long timeout)
{
	unsigned long this_time;
	char this_hour;

	this_time = *realclock;
	this_hour = (this_time >> 16) & 0xff;
	if(this_hour != oldhour) {
		if(this_hour < oldhour)
			date += MAXTICKS;
		oldhour = this_hour;
	}
	this_time += date;

	return(timeout < this_time);
}