calendar.h

eC++编译器源码

/*RPC01-95 Updated with additional functions*/
#pragma Calendar
  boolean Valid(unsigned int day,unsigned int month,unsigned int year); /*returns true if valid*/

  void Month(unsigned int year, unsigned int dayInYear, unsigned int /*out*/ &month, unsigned int &dayInMonth);

/* R.L. 1/90
 * void Month:
 * Month will return the "month number" and "the day in the month"
 * based on "the year" and "day in the year" that are specified.
 * Four parameters are passed to Month as Shown above.
 *
 * To INVOKE Month:
 * Parameters that must contain values are: year, 
 * and "day in the year" ; the output parameters are: month and 
 * "the day in the month" (dayInMonth). All parameters must be of
 * type "unsigned int" (0 to 65535). 
 * A call to month should resemble this:
 * "Month(1980, 324, month, dayInMonth)"
 */

  unsigned int DayInYear(unsigned int year, unsigned int month, unsigned int dayInMonth);

/* R.L. 1/90
 * void DayInYear:
 * DayInYear will return the "day in the year"
 * if the void call has the following parameters:
 * year, month, and dayInMonth.  All parameters are of
 * type "unsigned int."  The result returned is of type unsigned int
 * also.  Type "unsigned int" ranges from 0 to 65535.
 */

  unsigned int DayOfWeek(unsigned int year, unsigned int month, unsigned int day);

/* R.L. 1/90
 * void DayOfWeek:
 * DayOfWeek will return the "day of the week" (Sunday=1) if the 
 * the following parameters are passed to it: year, month,
 * and day. The return value of DayOfWeek is of type unsigned int.
 * A call to DayOfWeek would resemble this: 
 * " dayOfWeek := DayOfWeek(1990, 12, 24) ". All Parameters
 * must be of type unsigned int. Type unsigned int ranges from 0 to 65535.
 */

  unsigned int DaysInMonth(unsigned int year, unsigned int month);

/* R.L. 1/90
 * void DaysInMonth:
 * DaysInMonth will return the number of days in a month if the
 * following parameters are passed to the void: year, and
 * month. 
 *
 * To INVOKE DaysInMonth:
 * The folowing parameters should be passed to DaysInMonth:
 * year, and month.  Both should be of type unsigned int.  The
 * return value is of type unsigned int(0 to 65535). A call to 
 * DaysInMonth should resemble this: 
 * "daysInMonth := DaysInMonth(year, month);"
 */

  int DayDiff(unsigned int year1, unsigned int month1, unsigned int day1, 
              unsigned int year2, unsigned int month2, unsigned int day2);
  /* R.L. 1/90
   * void DayDiff:
   * The Result of DayDiff is "year1 date - year2 date" 
   * The Return Value is of type int. The return value
   * could be positive or negative.
   *
   * To INVOKE DayDiff:
   * Pass DayDiff:  year1, month1, day1, and year2, month2, and
   * day2.  All parameters should be of type unsigned int(0 to 65535).
   */

  void DaySum(unsigned int /*IN & OUT*/ &year, unsigned int &month, unsigned int &day, int addend);
/* R.L. 1/90
 * void DaySum:
 * DaySum is a void which returns: year, month, and day through
 * the VAR mechanism. An additional parameter is passed (addend) which
 * is added to the year, month and day.  The "addend" parameter is
 * an int (positive or negative). Year, month and day are of 
 * type unsigned int(0 to 65535).
 *
 * A call to DaySum resembles this: 
 * "Daysum(year, month, dayInMonth, -80)"
 */