public function testSign()
{
$this->assertEquals('-', Angle::deg(-10)->sign);
$this->assertEquals('-', Angle::rad(-10)->sign);
$this->assertEquals('-', Angle::asec(-10)->sign);
$this->assertEquals('-', Angle::amin(-10)->sign);
$this->assertEquals('-', Angle::mas(-10)->sign);
$this->assertEquals('-', Angle::dms(-10, 0, 0, 0)->sign);
$this->assertEquals('-', Angle::dms(0, -10, 0, 0)->sign);
$this->assertEquals('-', Angle::dms(0, 0, -10, 0)->sign);
$this->assertEquals('-', Angle::dms(0, 0, 0, -10)->sign);
$this->assertEquals('+', Angle::dms(10, 0, 0, 0)->sign);
$this->assertEquals('+', Angle::dms(1, -10, 0, 0)->sign);
$this->assertEquals('+', Angle::dms(1, 0, -10, 0)->sign);
$this->assertEquals('+', Angle::dms(1, 0, 0, -10)->sign);
$this->assertEquals('+', Angle::deg(10)->sign);
$this->assertEquals('+', Angle::rad(10)->sign);
$this->assertEquals('+', Angle::asec(10)->sign);
$this->assertEquals('+', Angle::amin(10)->sign);
$this->assertEquals('+', Angle::mas(10)->sign);
}
/**
* Converts this distance to a parallax measurement of astronomical
* parallax.
*
* @return Angle
*/
private function toParallax()
{
return Angle::asec(1 / $this->pc);
}
