Packed_float_option.Ieee_nanOperations where we use NaN semantics even though they are inconsistent with the remaining operators, e.g., >= violates the equivalance a >= b <-> a > b || a = b because it returns false for two none inputs.
Operations where we use NaN semantics even though they are inconsistent with the remaining operators, e.g., >= violates the equivalance a >= b <-> a > b || a = b because it returns false for two none inputs.