Formal Compliance
Formal compliance means that the software conforms to the criteria for implementation compliance and a formal proof exists that the following date operations anywhere in the software are equivalent to those in DateBench:
| • | determination of leap year |
| • | conversion from a Gregorian date to day of the year |
| • | conversion from day of the year to Gregorian date |
| • | comparison of dates |
| • | determination of the day of the week |
| • | adding or subtracting days to a date |
| • | subtracting a date from another date. |