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comment typo: form -> from (#8921)

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Jeremy Kun 2021-06-07 04:31:56 -07:00 committed by GitHub
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src/hyperloglog.c
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@ -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);