public function testSin()
{
$this->assertTrue(CMathf::equalsZt(CMathf::sin(0.0), 0.0));
$this->assertTrue(CMathf::equalsZt(CMathf::sin(CMathf::HALF_PI), 1.0));
$this->assertTrue(CMathf::equalsZt(CMathf::sin(CMathf::PI / 4), 0.707106781));
$this->assertTrue(CMathf::equalsZt(CMathf::sin(CMathf::PI / 6), 0.5));
$this->assertTrue(CMathf::equalsZt(CMathf::sin(10), -0.54402111));
}