RoundingMonotonic.java

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package org.apache.doris.nereids.trees.expressions.functions;

/** A monotonic function whose result is guaranteed to be on one side of its input. */
public interface RoundingMonotonic extends Monotonic {
    /** Direction in which the function rounds its input. */
    enum RoundingType {
        FLOOR,
        CEIL
    }

    RoundingType getRoundingType();

    /** Whether the current arguments preserve the declared relation between the result and input. */
    default boolean isRoundingRelationGuaranteed() {
        return true;
    }
}