1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
package Time::DaysInMonth;
use Carp;
require 5.000;
@ISA = qw(Exporter);
@EXPORT = qw(days_in is_leap);
@EXPORT_OK = qw(%mltable);
use strict;
use vars qw($VERSION %mltable);
$VERSION = 96.032702;
CONFIG: {
%mltable = qw(
1 31
3 31
4 30
5 31
6 30
7 31
8 31
9 30
10 31
11 30
12 31);
}
sub days_in
{
# Month is 1..12
my ($year, $month) = @_;
return $mltable{$month+0} unless $month == 2;
return 28 unless &is_leap($year);
return 29;
}
sub is_leap
{
my ($year) = @_;
return 0 unless $year % 4 == 0;
return 1 unless $year % 100 == 0;
return 0 unless $year % 400 == 0;
return 1;
}
1;
__DATA__
=head1 NAME
Time::DaysInMonth -- simply report the number of days in a month
=head1 SYNOPSIS
use Time::DaysInMonth;
$days = days_in($year, $month_1_to_12);
$leapyear = is_leap($year);
=head1 DESCRIPTION
DaysInMonth is simply a package to report the number of days in
a month. That's all it does. Really!
=head1 AUTHOR
David Muir Sharnoff <muir@idiom.com>
Copyright (C) 1996-1999 David Muir Sharnoff. All Rights Reserved.
Use and redistribution allowed at user's own risk.
|
