public static decimal Round(decimal amount, Rounding rounding)
{
var floatRounded = Math.Round(amount, rounding.FloatPrecision, MidpointRounding.AwayFromZero);
return rounding.IntegerRounding != null
? IntegerRound(amount, rounding.IntegerRounding.Value)
: floatRounded;
}
public ExchangeRate CalculateFromConversionRate(ConversionRate conversionRate, DateTime timstampUtc, Rounding rounding)
{
Argument.NotNull(conversionRate, "conversionRate");
var baseCurrency = _currencyRepository.Find(conversionRate.Conversion.From);
if (baseCurrency == null)
{
var message = string.Format("Can't find currency [{0}] in the database.", conversionRate.Conversion.From);
throw new InvalidOperationException(message);
}
var foreignCurrency = _currencyRepository.Find(conversionRate.Conversion.To);
if (foreignCurrency == null)
{
var message = string.Format("Can't find currency [{0}] in the database.", conversionRate.Conversion.To);
throw new InvalidOperationException(message);
}
var buyRate = MoneyMath.Round(conversionRate.Rate * (decimal) Randomizer.FromRange(_settings.BuyRateCoefficientRange), rounding);
var sellRate = MoneyMath.Round(conversionRate.Rate * (decimal) Randomizer.FromRange(_settings.SellRateCoefficientRange), rounding);
return ExchangeRate.Create(baseCurrency, foreignCurrency, buyRate, sellRate, timstampUtc);
}