public function testCeil()
{
$this->assertTrue(CMathf::ceil(1.2) === 2.0);
$this->assertTrue(CMathf::ceil(2.8) === 3.0);
$this->assertTrue(CMathf::ceil(3.0) === 3.0);
$this->assertTrue(CMathf::ceil(-4.2) === -4.0);
$this->assertTrue(CMathf::ceil(-5.0) === -5.0);
$this->assertTrue(CMathf::ceil(1) === 1.0);
$this->assertTrue(CMathf::ceil(-2) === -2.0);
}