Litipk\BigNumbers\Decimal::ceil PHP Method

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