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 *  Copyright (c) 2014-2019 Appsicle
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 *  http://www.apache.org/licenses/LICENSE-2.0
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package io.questdb.std;

public class Long128 {
    public static final int BYTES = 16;

    // this method is used by byte-code generator
    // Note that the arguments are of weird pattern: aLo, aHi, bHi, bLo
    // this is because of alternation of the order when using getLong128Hi, getLong128Lo
    // instead as A, B records.
    // See special cases for Long128 in RecordComparatorCompiler
    public static int compare(long aLo, long bHi, long aHi, long bLo) {

        if (aHi < bHi) {
            return -1;
        }

        if (aHi > bHi) {
            return 1;
        }

        return Long.compareUnsigned(aLo, bLo);
    }

    public static boolean isNull(long lo, long hi) {
        return hi == Numbers.LONG_NULL && lo == Numbers.LONG_NULL;
    }
}