/**
* Returns the (min, max) of the two scales or zero
*
* @param N $l
* @param N $r
*
* @return array [min, max]
*/
public static function getScales(N $l, N $r)
{
$scales = [];
if ($l instanceof FloatNumber) {
$scales[] = $l->getScale();
}
if ($r instanceof FloatNumber) {
$scales[] = $r->getScale();
}
if (count($scales) == 1) {
$scales[] = $scales[0];
}
return [min($scales), max($scales)];
}
public function __construct($value)
{
parent::__construct($value);
}
/**
* @test
* @dataProvider numbers
*/
public function to_string_numbers(N $i, $expected)
{
$this->assertSame($expected, $i->__toString());
}
/**
* Check if this number is less than the given value
*
* @param N $other
*
* @return mixed
*/
protected function _lt(N $other)
{
return $this->getValue() < intval($other->getValue());
}
/**
* Sub two Numbers
* $l - $r
*
* @param VONumber $l
* @param VONumber $r
*
* @return VONumber
*/
public function sub(VONumber $l, VONumber $r)
{
if ($l instanceof IntegerNumber && $r instanceof IntegerNumber) {
return new IntegerNumber(bcsub($l->__toString(), $r->__toString()));
} else {
$scale = FloatNumber::getScales($l, $r);
$res = new FloatNumber(bcsub($l->__toString(), $r->__toString(), $scale[1]), $scale[0]);
return $res;
}
}
