presto-rcfile/src/main/java/io/prestosql/rcfile/text/DoubleEncoding.java/DoubleEncoding/decodeValueInto
class DoubleEncoding:    @Override
    public void decodeValueInto(int depth, BlockBuilder builder, Slice slice, int offset, int length)
            throws RcFileCorruptionException
    {
        type.writeDouble(builder, parseDouble(slice, offset, length));
    }