A class containing the constants is a nice clean way to do this. See the article in Matlab documentation: http://www.mathworks.com/help/matlab/matlab_oop/properties-with-constant-values.html
For example, if you create a class called NamedConst
as follows:
classdef NamedConst
properties (Constant)
R = pi/180;
D = 1/NamedConst.R;
AccCode = '0145968740001110202NPQ';
RN = rand(5);
end
end
You can reference values with
radi = 45*NamedConst.R
You can find more details in the link given.