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Created on 2012-09-28 10:11 by sbanjac, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (3) | |||
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| msg171427 - (view) | Author: Sasa Banjac (sbanjac) | Date: 2012-09-28 10:11 | |
Hello! I am using the calendar.leapdays(y1,y2) function. It should return the number of leap years betwwen y1 and y2 (exclusive). However the function still cant process mutliple centuries. Example: between 1900 and 2000 we have 24 leap years: 1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96 leapdays(1900,2000) returns 24 -> OK however leapdays(1899,2000) returns also 24 NOT OK leapdays(1899,2001) returns 25 NOT OK leapdays(1900,2001) returns 25 OK This means that the function has a problem with the lower boundary If I try to calculate the number of leap days in a larger interval of years, the error is considerable: leapdays(1,2001) returns 485 But 485 * 4 = 1940 |
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| msg171433 - (view) | Author: Peter Inglesby (inglesp) * | Date: 2012-09-28 10:50 | |
This behaviour is correct. Years divisible by 4 are leap years, except years divisible by 100, except years divisible 400. Source http://en.wikipedia.org/wiki/Leap_year. |
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| msg171436 - (view) | Author: Larry Hastings (larry) *  |
Date: 2012-09-28 10:56 | |
Agreed. Not a bug. Closing the issue. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:36 | admin | set | github: 60282 |
| 2012-09-28 10:56:31 | larry | set | status: open -> closed type: behavior messages: + msg171436 resolution: not a bug stage: resolved |
| 2012-09-28 10:55:31 | inglesp | set | nosy:
+ larry |
| 2012-09-28 10:50:55 | inglesp | set | nosy:
+ inglesp messages: + msg171433 |
| 2012-09-28 10:11:15 | sbanjac | create | |