27    return (a == b) || (a < b);
    44    return (a == b) || (a > b);
 bool operator<(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)
bool operator>(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)
bool operator!=(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)
bool operator==(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)
bool operator<=(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)
bool operator>=(const DiscrepancyOpInfo &a, const DiscrepancyOpInfo &b)