toolbox - degtorad vs deg2rad in MATLAB? -

is there difference between degtorad , deg2rad in matlab? there benefit of 1 on other, speed (or other metric didn't think of)?

http://www.mathworks.com/help/map/ref/degtorad.html http://www.mathworks.com/help/map/ref/deg2rad.html

thank-you excaza telling me how view source code both functions.
thank-you hbaderts telling me check licenses in use.

here i've found.

they functionally identical. here differences find:
1. bolded line below states deg2rad has been replaced degtorad.
2. use different licenses. deg2rad requires map_toolbox, while degtorad not.

degtorad.m

function angleinradians = degtorad(angleindegrees)
% degtorad convert angles degrees radians
%
% angleinradians = degtorad(angleindegrees) converts angle units degrees radians.
%
% example
% -------
% compute tangent of 45-degree angle
% tan(degtorad(45))
%
% see also: fromdegrees, fromradians, todegrees, toradians, radtodeg.

% copyright 2009 mathworks, inc.

angleinradians = (pi/180) * angleindegrees;

deg2rad.m

function angleinradians = deg2rad(angleindegrees)
% deg2rad convert angles degrees radians
%
% deg2rad has been replaced degtorad.
%
% angleinradians = deg2rad(angleindegrees) converts angle units degrees radians.

% copyright 2007-2009 mathworks, inc.

angleinradians = (pi/180) * angleindegrees;

license difference:

degtorad(180)
ans =
3.1416
license('inuse')
matlab

deg2rad(180)
ans =
3.1416
license('inuse')
map_toolbox
matlab