/**
* @return whether a BigDecimal is a valid Farrago decimal. If a BigDecimal's unscaled value
* overflows a long, then it is not a valid Farrago decimal.
*/
public static boolean isValidDecimal(BigDecimal bd) {
BigInteger usv = bd.unscaledValue();
long usvl = usv.longValue();
return usv.equals(BigInteger.valueOf(usvl));
}
public static final BigDecimal rescaleBigDecimal(BigDecimal bd, int scale) {
if (bd != null) {
bd = bd.setScale(scale, BigDecimal.ROUND_HALF_UP);
}
return bd;
}