/9pm/src/libc/port/cputime.c - Plan 9 from User Space

Plan 9 from User Space's /usr/local/plan9/9pm/src/libc/port/cputime.c

#include <9pm/u.h>
#include <9pm/libc.h>

#define	HZ	1000

double
cputime(void)
{
	long t[4];
	int i;

	times(t);
	for(i=1; i<4; i++)
		t[0] += t[i];
	return t[0] / (double)HZ;
}