Method isNull

core/src/main/java/io/questdb/std/Numbers.java:1046–1048

Checks double value for NULL in database sense. NULL is anything that is not "finite". In this sense the return value is directly opposite of the return value of #isFinite(double) @param value to check @return true if value is "infinite", which includes Double#isNaN(double), positiv

(double value)

     * infinities that arise from division by 0.
     */
    public static boolean isNull(double value) {
        return (Double.doubleToRawLongBits(value) & EXP_BIT_MASK) == EXP_BIT_MASK;
    }

    public static boolean isNull(float value) {
        return Float.isNaN(value) || Float.isInfinite(value);