% -*- texinfo -*-
% @deftypefn {Function File} [@var{Val},@var{unit},@var{uncertanity},@var{desc},@var{name}] {} =physical_constant(@var{arg})
% @var{arg} is the name of the physical constant to retrieve.
% The output arguments are the attributes which you need.
% By default, the return value is the constant value.
% if no arguments are passed, depending on the output arguments the entire units structure is returned
% @var{Val} is actual value of the constant.
% @var{Unit} is a Units string.
% @var{uncertanity} is +/- value to constant.
%
% Autogenerated on Fri Feb 23 00:35:47 2007
% from NIST database at http://physics.nist.gov/constants
% @end deftypefn