Spreadsheet::Engine::Function::WEEKDAY - Spreadsheet funtion WEEKDAY()

Spreadsheet-Engine documentation Contained in the Spreadsheet-Engine distribution.

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NAME

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Spreadsheet::Engine::Function::WEEKDAY - Spreadsheet funtion WEEKDAY()

SYNOPSIS

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  =WEEKDAY(date, [type])

DESCRIPTION

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This returns the day of the week for the given date.

If type is 1, then Sunday is the first day of the week (value 1)

If type is 2, then Monday is the first day of the week (value 1)

If type is 3, then Monday is the first day of the week (value 0)

HISTORY

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This is a Modified Version of code extracted from SocialCalc::Functions in SocialCalc 1.1.0

COPYRIGHT

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Portions (c) Copyright 2005, 2006, 2007 Software Garden, Inc. All Rights Reserved.

Portions (c) Copyright 2007 Socialtext, Inc. All Rights Reserved.

Portions (c) Copyright 2008 Tony Bowden

LICENCE

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The contents of this file are subject to the Artistic License 2.0; you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.perlfoundation.org/artistic_license_2_0

Spreadsheet-Engine documentation Contained in the Spreadsheet-Engine distribution. 
package Spreadsheet::Engine::Function::WEEKDAY;

use strict;
use warnings;

use base 'Spreadsheet::Engine::Fn::math';

sub argument_count { -1 => 2 }
sub signature { 'n', [ '>=1', '<=3' ] }

sub calculate {
  my ($self, $date, $type) = @_;
  $type ||= 1;

  my $doffset = 6;
  $doffset-- if $type > 1;
  return int($date + $doffset) % 7 + ($type < 3 ? 1 : 0);
}

1;

__END__