costin commented on code in PR #16160:
URL: https://github.com/apache/lucene/pull/16160#discussion_r3416805523
##########
lucene/core/src/java/org/apache/lucene/codecs/lucene90/Lucene90DocValuesProducer.java:
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@@ -480,6 +480,59 @@ static void rangeIntoBitSet(
values, fromDoc, toDoc, minValue, maxValue, bitSet, offset);
}
+ private static void rangeGcdDeltaIntoBitSet(
+ LongValues values,
+ int fromDoc,
+ int toDoc,
+ long minValue,
+ long maxValue,
+ long mul,
+ long delta,
+ FixedBitSet bitSet,
+ int offset) {
+ long encodedMin;
+ long encodedMax;
+ try {
+ encodedMin = Math.subtractExact(minValue, delta);
+ encodedMax = Math.subtractExact(maxValue, delta);
+ if (mul != 1) {
+ encodedMin = ceilDiv(encodedMin, mul);
Review Comment:
With mul > 0 it's overflow-safe, so the Math.addExact in the positive branch
was redundant. Reads symmetric to Math.floorDiv now
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