CREATE OR REPLACE FUNCTION isrslt(a isrs, b isrs) RETURNS boolean
AS $$
BEGIN
    RETURN public.isrs_cmp(a, b) < 0;
END;
$$ LANGUAGE plpgsql
    IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION isrsle(a isrs, b isrs) RETURNS boolean
AS $$
BEGIN
    RETURN public.isrs_cmp(a, b) <= 0;
END;
$$ LANGUAGE plpgsql
    IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION isrseq(a isrs, b isrs) RETURNS boolean
AS $$
BEGIN
    RETURN public.isrs_cmp(a, b) = 0;
END;
$$ LANGUAGE plpgsql
    IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION isrsge(a isrs, b isrs) RETURNS boolean
AS $$
BEGIN
    RETURN public.isrs_cmp(a, b) >= 0;
END;
$$ LANGUAGE plpgsql
    IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION isrsgt(a isrs, b isrs) RETURNS boolean
AS $$
BEGIN
    RETURN public.isrs_cmp(a, b) > 0;
END;
$$ LANGUAGE plpgsql
    IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION isrs_diff(a isrs, b isrs) RETURNS double precision
AS $$
    SELECT CAST(public.isrs_cmp(a, b) AS double precision)
$$ LANGUAGE sql
    IMMUTABLE PARALLEL SAFE;