Operations on date data

The library provides functions to perform operations on DATE (mi_date) values.

Table 1. functions that perform operations on date data
Function name Description
rdayofweek() Returns the day of the week
rjulmdy() Returns month, day, and year from an internal format
rleapyear() Determines whether a specified year is a leap year
rmdyjul() Returns an internal format from month, day, and year
rtoday() Returns a system date in internal format

Any other operations, modifications, or comparisons can produce unpredictable results.