Constants(3pm) User Contributed Perl Documentation Constants(3pm)

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

This module is used to define compile time constant values for PDL. It uses Perl's constant pragma for simplicity and availability.

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

The ratio of a circle's circumference to its diameter

The number of degrees of arc per radian (180/PI)

The base of the natural logarithms or Euler's number

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.

2024-04-10 perl v5.38.2