public function testIntervalRandom()
{
for ($i = 0; $i < 10; $i++) {
$rnd = CMathf::intervalRandom(12.0, 34.0);
$this->assertTrue(12.0 <= $rnd && $rnd < 34.0);
}
for ($i = 0; $i < 10; $i++) {
$rnd = CMathf::intervalRandom(56.0, 78.0);
$this->assertTrue(56.0 <= $rnd && $rnd < 78.0);
}
$rnd = CMathf::intervalRandom(0, 0);
$this->assertTrue($rnd === 0.0);
}