tisonkun commented on code in PR #23:
URL: https://github.com/apache/datasketches-rust/pull/23#discussion_r2622256216
##########
src/tdigest/serialization.rs:
##########
@@ -17,6 +41,45 @@ impl TDigest {
});
bytes.push(SERIAL_VERSION);
bytes.push(TDIGEST_FAMILY_ID);
+ LE::write_u16(&mut bytes, self.k);
+ bytes.push({
+ let mut flags = 0;
+ if self.is_empty() {
+ flags |= FLAGS_IS_EMPTY;
+ }
+ if self.is_single_value() {
+ flags |= FLAGS_IS_SINGLE_VALUE;
+ }
+ if self.reverse_merge {
+ flags |= FLAGS_REVERSE_MERGE;
+ }
+ flags
+ });
+ LE::write_u16(&mut bytes, 0); // unused
+ if self.is_empty() {
+ return bytes;
+ }
+ if self.is_single_value() {
+ LE::write_f64(&mut bytes, self.min);
+ return bytes;
+ }
+ LE::write_u32(&mut bytes, self.centroids.len() as u32);
+ LE::write_u32(&mut bytes, 0); // unused
Review Comment:
This is for `self.buffer`. While in Java impl we always compress and thus
skip all for the buffer, the C++ impl may include it.
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