public function testAtan2() { $this->assertTrue(CMathf::equalsZt(CMathf::atan2(0.0, 1.0), 0.0)); $this->assertTrue(CMathf::equalsZt(CMathf::atan2(0.707106781, 0.707106781), CMathf::PI / 4)); $this->assertTrue(CMathf::equalsZt(CMathf::atan2(0.707106781, -0.707106781), CMathf::PI * 3 / 4)); $this->assertTrue(CMathf::equalsZt(CMathf::atan2(3, 4), 0.643501109)); }