Why does the EXIST function return an incorrect value in stand-alone mode?

Why does the EXIST function return an incorrect value in stand-alone mode?

Whenever I try to use the EXIST function in standalone mode, the wrong results are returned.

For instance the following code returns 0 in stand-alone mode:

function redbatmod

eat = 1;

exist('eat')

exist('flames')

Answer 1

[MathWorks Support Team]

The EXIST function has limitations for support in stand-alone mode. For more information, see the solution attached at the bottom of this page.

As a workaround, you can use either NARGIN or the following code, if you wish to check for the existence of a variable:

function texist2

nw = 2;

try

      isempty(nw);

      myexist=1;

catch

      myexist=0;

end

fprintf(1,'exist: %d\n',myexist);