ref: 922fc6faa00ab4e0f46b9f3d3c6bbd25a1c2201d
dir: /sys/src/libsec/port/fastrand.c/
#include "os.h"
#include <libsec.h>
/* 
 *  use the X917 random number generator to create random
 *  numbers (faster than truerand() but not as random).
 */
ulong
fastrand(void)
{
	ulong x;
	
	genrandom((uchar*)&x, sizeof x);
	return x;
}