| ::tuple_equal | Test, whether two tuples are equal. |
| ::tuple_greater | Test, whether a tuple is greater than another tuple. |
| ::tuple_greater_equal | Test, whether a tuple is greater or equal to another tuple. |
| ::tuple_less | Test, whether a tuple is less than another tuple. |
| ::tuple_less_equal | Test, whether a tuple is less or equal to another tuple. |
| ::tuple_not_equal | Test, whether two tuples are not equal. |