src/Malenki/Math/Unit/Angle.php
public function turn()
    {
        if ($this->original->type == self::TYPE_TURN) {
            return $this->original->value;
        }

        return $this->float_rad / (2 * pi());
    }
public function turn()
    {
        if ($this->original->type == self::TYPE_TURN) {
            return $this->original->value;
        }

        return $this->float_rad / (2 * pi());
    }
Gets number of turns

@access public
@return float