NAME
    Math::MagicSquare - Magic Square Checker

SYNOPSIS
      use Math::MagicSquare;

      $a= Math::MagicSquare -> new ([num,...,num],
                                     ...,
                                    [num,...,num]);
      $a->print("string");
      $a->printhtml();
      $a->printimage();
      $a->check();
      $a->rotation();
      $a->reflection();

DESCRIPTION
    The following methods are available:

  new

    Constructor arguments are a list of references to arrays of the same
    length.

        $a = Math::MagicSquare -> new ([num,...,num],
                                        ...,
                                       [num,...,num]);

  check

    This function can return 4 value

    *   0: the Square is not Magic

    *   1: the Square is a Semimagic Square (the sum of the rows and the
        columns is equal)

    *   2: the Square is a Magic Square (the sum of the rows, the columns
        and the diagonals is equal)

    *   3: the Square ia Panmagic Square (the sum of the rows, the columns,
        the diagonals and the broken diagonals is equal)

  print

    Prints the Square on STDOUT. If the method has additional parameters,
    these are printed before the Magic Square is printed.

  printhtml

    Prints the Square on STDOUT in an HTML format (exactly a inside a TABLE)

  printimage

    Prints the Square on STDOUT in png format.

  rotation

    Rotates the Magic Square of 90 degree clockwise

  reflection

    Reflect the Magic Square

REQUIRED
    GD perl module.

EXAMPLE
        use Math::MagicSquare;

        $A = Math::MagicSquare -> new ([8,1,6],
                                       [3,5,7],
                                       [4,9,2]);
        $A->print("Magic Square A:\n");
        $A->printhtml;
        $i=$A->check;
        if($i == 2) {print "This is a Magic Square.\n";}
        $A->rotation();
        $A->print("Rotation:\n");
        $A->reflection();
        $A->print("Reflection:\n");
        $A->printimage();

     This is the output:
        Magic Square A:
            8     1     6 
            3     5     7 
            4     9     2 
        <TABLE border=3 width="2" height="2" cellpadding=1 cellspacing=1>
        <TR>
        <TD align=right><FONT size=+2><B>8</B></font></TD>
        <TD align=right><FONT size=+2><B>1</B></font></TD>
        <TD align=right><FONT size=+2><B>6</B></font></TD>
        </TR>
        <TR>
        <TD align=right><FONT size=+2><B>3</B></font></TD>
        <TD align=right><FONT size=+2><B>5</B></font></TD>
        <TD align=right><FONT size=+2><B>7</B></font></TD>
        </TR>
        <TR>
        <TD align=right><FONT size=+2><B>4</B></font></TD>
        <TD align=right><FONT size=+2><B>9</B></font></TD>
        <TD align=right><FONT size=+2><B>2</B></font></TD>
        </TR>
        </TABLE>
        This is a Magic Square.
        Rotation:
            4     3     8 
            9     5     1 
            2     7     6
        Reflection:
            8     3     4
            1     5     9
            6     7     2

AUTHOR
     Fabrizio Pivari fabrizio@pivari.com
     http://www.pivari.com/

Copyright
     Copyright 2003, Fabrizio Pivari fabrizio@pivari.com
     This library is free software; you can redistribute it and/or modify it under
     the same terms as Perl itself. 
     Are you interested in a Windows cgi distribution?
     Test http://www.pivari.com/squaremaker.html and contact me.

Availability
     The latest version of this library is likely to be available from:
     http://www.pivari.com/CPAN/
     and at any CPAN mirror

Information about Magic Square
     Do you like Magic Square?
     Do you want to know more information about Magic Square?
     Try to visit

    A very good introduction on Magic Square
        http://mathworld.wolfram.com/MagicSquare.html

    Whole collections of links and documents in Internet
        http://mathforum.org/alejandre/magic.square.html
        http://mathforum.org/te/exchange/hosted/suzuki/MagicSquare.html

    A good collection of strange Magic Square
        http://www.geocities.com/pivari/examples.html