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
The imaginary unit,
I*I == -1
The imaginary unit for engineers,
J*J == -1
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.