// out of full long range (including negative values)
static long randomLong() {
  ret defaultRandomGenerator().nextLong();
}

static long randomLong(Random random) {
  ret random.nextLong();
}

// returns number between 0 and max-1
static long randomLong(Random random default defaultRandomGenerator(), long max) {
  ret mod(randomLong(random), max);
}

// min <= value < max
static long randomLong(long min, long max) {
  ret min+randomLong(max-min);
}