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

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

Index

Code Index:

NAME

Top

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

SYNOPSIS

Top

  =STDEVP(list_of_numbers)

DESCRIPTION

Top

This returns the standard deviation.

We calculate as per Knuth "The Art of Computer Programming" Vol. 2 3rd edition, page 232

HISTORY

Top

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

COPYRIGHT

Top

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

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

Portions (c) Copyright 2007, 2008 Tony Bowden

LICENCE

Top

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::STDEVP;

use strict;
use warnings;

use base 'Spreadsheet::Engine::Function::VARP';

sub result_from {
  my ($self, $A) = @_;
  die Spreadsheet::Engine::Error->div0 unless $A->{count} > 1;
  return sqrt $self->SUPER::result_from($A);
}

1;

__END__