/// <summary>
/// Converts an FX exchange to a string.
/// </summary>
/// <param name="base"> the base currency amount </param>
/// <param name="counter"> the counter currency amount </param>
/// <returns> the string form </returns>
public static string fx(CurrencyAmount @base, CurrencyAmount counter)
{
decimal rateDec = decimal.valueOf(counter.Amount / @base.Amount).setScale(@base.Currency.MinorUnitDigits + 2, RoundingMode.HALF_UP).abs();
FxRate rate = FxRate.of(@base.Currency, counter.Currency, rateDec.doubleValue());
decimal baseDec = decimal.valueOf(@base.Amount).stripTrailingZeros();
decimal counterDec = decimal.valueOf(counter.Amount).stripTrailingZeros();
bool roundBase = baseDec.scale() < counterDec.scale();
CurrencyAmount round = roundBase ? @base : counter;
return((round.Amount < 0 ? "Pay " : "Rec ") + SummarizerUtils.amount(round.mapAmount(a => Math.Abs(a))) + " " + "@ " + rate);
}
