Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Re^3: What about Easter?

by themage (Friar)
on Jul 25, 2005 at 12:19 UTC ( #477772=note: print w/replies, xml ) Need Help??


in reply to Re^2: What about Easter?
in thread What about Easter?

There is a small error in the PHP version, that pg ported here: <updated, wrong name>.

The line
$H = int($C - ($C / 4) - ((8*$C+13) / 25) + 19*$G + 15) % 30;

Should be:
$H = ($C - int($C / 4) - int((8*$C+13) / 25) + 19*$G + 15) % 30;

The final sub sould look like:

sub easter_date { my $Year = shift; my ($G,$C,$H,$I,$J,$L)="0"x6; $G = $Year % 19; $C = int($Year / 100); $H = ($C - int($C / 4) - int((8*$C+13) / 25) + 19*$G + 15) % 30; $I = $H - int($H / 28)*(1 - int($H / 28)*int(29 / ($H + 1))*(int(21 +- $G) / 11)); $J = ($Year + int($Year/4) + $I + 2 - $C + int($C/4)) % 7; $L = $I - $J; my $m = 3 + int(($L + 40) / 44); my $d = $L + 28 - 31 * (int($m / 4)); my $y = $Year; return sprintf("%04d-%02d-%02d", $y, $m, $d); }
This way, I think that it should be ok. What you think greenFox?

Replies are listed 'Best First'.
Re^4: What about Easter?
by greenFox (Vicar) on Jul 26, 2005 at 02:02 UTC

    That fixed it. With your updated sub I got 0 errors for 2517 dates. Well spotted.

    --
    Murray Barton
    Do not seek to follow in the footsteps of the wise. Seek what they sought. -Basho

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://477772]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (5)
As of 2020-10-19 21:54 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    My favourite web site is:












    Results (207 votes). Check out past polls.

    Notices?