Litipk\BigNumbers\Decimal::floor PHP Method

    public function floor($scale = 0)
    {
        if ($scale >= $this->scale) {
            return $this;
        }
        if ($this->isNegative()) {
            return $this->innerTruncate($scale, false);
        }
        return self::fromString(bcadd($this->value, '0', $scale));
    }