[Matlab] Deprecate constants.m

interfaces/matlab/toolbox/constants.m

@@ -1,6 +1,9 @@
 function [atm, r] = constants
 % CONSTANTS  Get the values of important constants.
 % [atm,r] = constants
+% Deprecated. To be removed after Cantera 2.3. Use :mat:func:`oneatm` and
+% :mat:func:`gasconstant` instead.
+%
 % :return:
 %     If one output argument is given, returns one atmosphere in
 %     Pascals. If two output arguments are given, returns one
@@ -8,5 +11,6 @@ function [atm, r] = constants
 %     J/kmol-K.
 %
 
+warning('This function is deprecated and will be removed after Cantera 2.3.');
 atm = 101325.0;
 r = 8314.4621;