PDL::Constants - basic compile time constants for PDL

PDL documentation Contained in the PDL distribution.

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NAME

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PDL::Constants -- basic compile time constants for PDL

DESCRIPTION

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This module is used to define compile time constant values for PDL. It uses the constant module for simplicity and availability. We'll need to sort out exactly which constants make sense but PI and E seem to be fundamental.

SYNOPSIS

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 use PDL::Constants;
 print 'PI is ' . PI . "\n";
 print 'E  is ' .  E . "\n";

COPYRIGHT & LICENSE

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Copyright 2010 Chris Marshall (chm at cpan dot org).

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

PDL documentation Contained in the PDL distribution. 
package PDL::Constants;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(PI E);  # symbols to export
                           
use constant PI    => 4 * atan2(1, 1);
use constant E     => exp(1);


1;