public void testCompare() {
for (long a : UNSIGNED_INTS) {
for (long b : UNSIGNED_INTS) {
int cmpAsLongs = Longs.compare(a, b);
int cmpAsUInt = UnsignedInts.compare((int) a, (int) b);
assertEquals(Integer.signum(cmpAsLongs), Integer.signum(cmpAsUInt));
}
}
}
@Override
public int compare(int[] left, int[] right) {
int minLength = Math.min(left.length, right.length);
for (int i = 0; i < minLength; i++) {
if (left[i] != right[i]) {
return UnsignedInts.compare(left[i], right[i]);
}
}
return left.length - right.length;
}
private static int compare(
@NotNull final Buffer left,
long leftFrom,
final long leftLength,
@NotNull final Buffer right,
long rightFrom,
final long rightLength) {
assert leftLength > 0;
assert rightLength > 0;
// Adapted from Guava UnsignedBytes
long length = Math.min(leftLength, rightLength);
for (;
length >= Longs.BYTES;
leftFrom += Longs.BYTES, rightFrom += Longs.BYTES, length -= Longs.BYTES) {
final long lw = left.getLong(leftFrom);
final long rw = right.getLong(rightFrom);
if (lw != rw) {
return UnsignedLongs.compare(lw, rw);
}
}
if (length >= Ints.BYTES) {
final int lw = left.getInt(leftFrom);
final int rw = right.getInt(rightFrom);
if (lw != rw) {
return UnsignedInts.compare(lw, rw);
}
leftFrom += Ints.BYTES;
rightFrom += Ints.BYTES;
length -= Ints.BYTES;
}
for (; length > 0; leftFrom++, rightFrom++, length--) {
final int result = UnsignedBytes.compare(left.get(leftFrom), right.get(rightFrom));
if (result != 0) {
return result;
}
}
return (leftLength < rightLength) ? -1 : ((leftLength == rightLength) ? 0 : 1);
}
protected final int compare(int index1, int index2) {
final boolean n1 = nulls.get(index1);
final boolean n2 = nulls.get(index2);
if (n1 && n2) {
return 0;
}
if (n1 ^ n2) {
return nullsFirst ? (n1 ? -1 : 1) : (n1 ? 1 : -1);
}
int compare;
switch (type) {
case 0:
compare = Booleans.compare(booleans[index1], booleans[index2]);
break;
case 1:
compare = bits[index1] - bits[index2];
break;
case 2:
compare = Shorts.compare(shorts[index1], shorts[index2]);
break;
case 3:
compare = Ints.compare(ints[index1], ints[index2]);
break;
case 4:
compare = Longs.compare(longs[index1], longs[index2]);
break;
case 5:
compare = Floats.compare(floats[index1], floats[index2]);
break;
case 6:
compare = Doubles.compare(doubles[index1], doubles[index2]);
break;
case 7:
compare = TextDatum.COMPARATOR.compare(bytes[index1], bytes[index2]);
break;
case 8:
compare = UnsignedInts.compare(ints[index1], ints[index2]);
break;
default:
throw new IllegalArgumentException();
}
return ascending ? compare : -compare;
}