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cal: simplify leap year rule 

Gregorian rule for leap years has been adopted by reformation in year
1782 (Calendar Act 1750), but all tools (date, SQL servers, etc. etc.)
don't care about it and apply the new rule for all year -- including
years before the reformation.

It's better to be compatible with another tools than try to be perfect :-)

Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1507271
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2017-11-13 17:34:19 +01:00
parent e1b5a57f43
commit b9bd8dc267
1 changed files with 1 additions and 5 deletions
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6
misc-utils/cal.c
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@ -531,13 +531,9 @@ int main(int argc, char **argv)
return EXIT_SUCCESS;
}
/* leap year -- account for gregorian reformation in 1752 */
static int leap_year(int32_t year)
{
if (year <= REFORMATION_YEAR)
return !(year % 4);
else
return ( !(year % 4) && (year % 100) ) || !(year % 400);
return ( !(year % 4) && (year % 100) ) || !(year % 400);
}
static void init_monthnames(struct cal_control *ctl)