fun Double?.toZec(decimals: Int = ZEC_FORMATTER.maximumFractionDigits): BigDecimal
Format a Double ZEC value as a BigDecimal ZEC value, right-padded to the given number of fraction digits. Start with ZEC -> End with ZEC.
decimals - the scale to use for the resulting BigDecimal.
Return
this Double ZEC value converted into a BigDecimal, with the proper rounding mode for use
with other formatting functions.