comment typo: form -> from
@@ -1033,7 +1033,7 @@ uint64_t hllCount(struct hllhdr *hdr, int *invalid) {
serverPanic("Unknown HyperLogLog encoding in hllCount()");
}
- /* Estimate cardinality form register histogram. See:
+ /* Estimate cardinality from register histogram. See:
* "New cardinality estimation algorithms for HyperLogLog sketches"
* Otmar Ertl, arXiv:1702.01284 */
double z = m * hllTau((m-reghisto[HLL_Q+1])/(double)m);
