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OS/2 Shareware BBS: 3 Comm
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JCLEPYER.CMD
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OS/2 REXX Batch file
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1996-03-28
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1KB
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28 lines
/******************************* REXX *********************************/
/* This is a simple external REXX function that determines whether */
/* or not a passed year is a leap year or not. If invoked without */
/* any operands, the determination is made on the current year. */
/* The function returns a "1" if it is a leap year, "0" if not. */
/**********************************************************************/
Parse Arg year, .
If year = '' Then
year = Left(Date('S'), 4)
jul_year = Right(year, 2)
jul_cent = Left(year, 2)
/**********************************************************************/
/* Leap years are calculated as follows: If the year is 0, and the */
/* century is divisible by 4, then it is a leap year (century */
/* divisible by 400). Otherwise, if the year is divisible by 4, it */
/* is a leap year. If the year is divisible by 100 and NOT */
/* divisible by 400, it is NOT a leap year. */
/**********************************************************************/
If ((jul_year = '00') & ,
(jul_cent // 4 = 0)) | ,
((jul_year \= '00') & ,
(jul_year // 4 = 0)) Then
sw = 1
Else
sw = 0
Return sw