public void GetWholePartTest()
{
var val = new BigDecimal(10.01m);
var res = new BigDecimal(10m);
Assert.AreEqual(res, val.GetWholePart(), $"GetWholePart() does not work with value '{val}'.");
}
/// <summary>
/// Convert a decimal defaultDecimalStringToByteArray to a byte array. </summary>
/// <param name="amountString"> it is a decimal string. e.g. "42.42" </param>
/// <param name="precisionLevel"> the precision level, means 10 power 18 precision. </param>
public static byte[] DecimalStringToByteArray(string amountString, int precisionLevel)
{
if (string.IsNullOrWhiteSpace(amountString))
{
throw new ArgumentException("amount string is blank.", nameof(amountString));
}
if (precisionLevel < 0)
{
throw new ArgumentException("precision level is less than 0", nameof(precisionLevel));
}
BigDecimal amountDecimal = BigDecimal.Parse(amountString);
BigDecimal precisionDecimal = BigDecimal.Pow(10, precisionLevel);
BigDecimal realAmount = BigDecimal.Multiply(amountDecimal, precisionDecimal);
return(TrimLeadingZeroes(realAmount.GetWholePart().ToByteArray()));
}
