V6020. Division or mod division by zero.
V6020 Divide by zero. The range of the 'divisor' denominator values includes zero. SqlMathUtil.java(265)
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public static long divideUnsignedLong(long dividend, long divisor) {
if (divisor < 0L) {
/*some comments*/
return (compareUnsignedLong(dividend, divisor)) < 0 ? 0L : 1L;
}
if (dividend >= 0) { // Both inputs non-negative
return dividend / divisor; // <=
} else {
....
}
}
Similar errors can be found in some other places:
V6020 Divide by zero. The range of the 'referenceSetSize' denominator values includes zero. PreDeConNeighborPredicate.java(138)
protected PreDeConModel computeLocalModel(DoubleDBIDList neighbors, ....) {
final int referenceSetSize = neighbors.size();
....
// Shouldn't happen:
if(referenceSetSize < 0) {
LOG.warning("Empty reference set –
should at least include the query point!");
return new PreDeConModel(Integer.MAX_VALUE, DBIDUtil.EMPTYDBIDS);
}
....
for(int d = 0; d < dim; d++) {
s[d] /= referenceSetSize;
mvVar.put(s[d]);
}
....
}
