#include <stdlib.h>

main(int ac, char **av)
{
	unsigned int t0, t1, tmin;
	int i;

	tmin = ~0;
	for (i = 0; i < 100000; ++i) {
		asm volatile("mftb %0; li %1,10000; mtctr %1; bdnz .; mftb %1"
			     : "=r" (t0), "=r" (t1) : : "ctr");
		t1 -= t0;
		if (t1 < tmin)
			tmin = t1;
	}
	printf("%d ticks for 10000 loops\n", t1);
	printf("Clock = %.3fGHz\n", 1000.0 / t1);

	exit(0);
}