# NAME Math::Tau - provide the important mathematical constant tau = 6.2831... # VERSION version 1.003 # SYNOPSIS use Math::Tau; print tau/2; # 3.14159265358979 use utf8; print τ/2; # 3.14159265358979 # DESCRIPTION tau is one of the most fundamental and misunderstood mathematical constants. See [The Tau Manifesto](http://tauday.com/) for why pi is a historical mistake. # CONSTANTS ## tau The mathematical constant 6.2831... as floating point. ## τ The Greek letter, for those of you who like to use Unicode identifiers. # SEE ALSO [Math::Complex](http://search.cpan.org/perldoc?Math::Complex), [Math::Trig](http://search.cpan.org/perldoc?Math::Trig) - [Math::Tau](http://search.cpan.org/perldoc?Math::Tau) # AUTHOR Franklin Chen # COPYRIGHT AND LICENSE This software is copyright (c) 2013 by Franklin Chen . This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.