Conversion of int to int (getAmount()) via ->convert() returning decimal of pence.

[jdfx]

Unless I am doing something wrong, the following seems incorrect:

Custom conversion of 0.36 EUR to GBP using an exchange rate of 1.10 EUR to 1 GBP. To get the conversion ratio going EUR to GBP we do:

1 / 1.10 = 0.90909090909 (or 0.91 as it comes out).

Then the ->convert function is taking the ->amount (36 - cents) value of 0.36 (EUR).

And doing the following: 0.36 * 0.91 = 32.76 which is correct technically, except we are converting pence here so you cannot have 32.76 pence, it should round up to 33pence.

The ->round() method is checking for the precision of GBP via $this->currency->getPrecision() and returning it at 2 decimal places for GBP which would be correct if we were dealing with pounds, but we're not. It should be 0.

Returning getAmount(true) to force rounding is not working as it is doing the same check as above.

I am likely doing something incorrectly, any ideas or is this a bug?

[jdfx]

If the converted amount result is less than the subunit, it breaks.
This fixes it but I don't know if somewhere else I have managed to cause an error, I don't think so.

    /**
     * @psalm-suppress ArgumentTypeCoercion
     */
    public function round(int|float $amount, int $mode = self::ROUND_HALF_UP): float
    {
        $this->assertRoundingMode($mode);
        $precision = ($amount < $this->currency->getSubunit()) ? 0 : $this->currency->getPrecision();
        return round($amount, $precision, $mode);
    }