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/*
* timing.c: Timing functions for XTux.
* Copyright 1999 David Lawrence (philaw@camtech.net.au)
* Last modified July 26
*/
#include <sys/time.h>
#include "header.h"
#include "timing.h"
/* Delay for i microseconds, returns seconds paused. */
int delay(unsigned int i)
{
struct timeval timeout;
if( i ) {
timeout.tv_usec = i % (unsigned long) M_SEC;
timeout.tv_sec = i / (unsigned long) M_SEC;
select(0, NULL, NULL, NULL, &timeout);
return i;
}
return 0;
}
/* Return the difference in microseconds between st and current time */
int time_diff(struct timeval rt, struct timeval st)
{
return 1000000 * (rt.tv_sec - st.tv_sec) + rt.tv_usec - st.tv_usec;
}
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