public static AmountEx from_decimal(Decimal val)
{
AmountEx amount = new AmountEx();
amount.integral = (Int32)val;
if (val < 0.0M)
{
amount.integral -= 1;
}
decimal frac = val - amount.integral;
frac *= FACTOR;
//amount.fraction = (UInt64)(frac + 0.5) * multiplier;
amount.fraction = (UInt64)(frac * MULTIPLIER + 0.5M);
if (amount.fraction >= AMOUNT_MAX_FRACTION)
{
amount.fraction -= AMOUNT_MAX_FRACTION;
amount.integral += 1;
}
return(amount);
}
public static string FormatAmount(AmountEx value)
{
if (value == null)
{
return(string.Empty);
}
if (value.Fraction == 0)
{
return($"{value.Integral}.0");
}
string sign = string.Empty;
if (value.Integral < 0)
{
value.fraction = AMOUNT_MAX_FRACTION - value.Fraction;
value.integral += 1;
sign = "-";
}
var frac = value.Fraction.ToString();
frac = frac.PadLeft(18, '0');
return(sign + $"{Math.Abs(value.Integral)}.{frac.TrimEnd('0')}");
}
public static Amount GetAmountByDouble_C(decimal val)
{
AmountEx amountEx = AmountEx.from_decimal(val);
return(new Amount(amountEx.Integral, (long)amountEx.Fraction));
}