public function testDistribution()
{
$twister = new MersenneTwister();
$twister->seed(424242);
$bins = array_fill(0, 2, 0);
for ($i = 0; $i < 1000; $i++) {
$number = $twister->extractNumber();
$bin = (int) floor($number / pow(2, 31));
$bins[$bin]++;
}
foreach ($bins as $count) {
$this->assertGreaterThan(400, $count);
}
}
