presto-hive/src/main/java/io/prestosql/plugin/hive/coercions/DecimalCoercers.java/ShortDecimalToRealCoercer/applyCoercedValue
class ShortDecimalToRealCoercer:        @Override
        protected void applyCoercedValue(BlockBuilder blockBuilder, Block block, int position)
        {
            toType.writeLong(blockBuilder,
                    shortDecimalToReal(fromType.getLong(block, position), rescale));
        }