MATLAB: If matlab does not signal me any error but in the .exe file does not work how can I write this code in another way

guide

How could I write this code in another way? Do you need the str2double? I put it to get the numerical value
function pushbutton3_Callback(~, ~, handles)
syms x %variable simbolica x
f=get(handles.edit8,'string');
xl=str2double(get(handles.edit3,'string'));
xu=str2double(get(handles.edit5,'string'));
tol=str2double(get(handles.edit4,'string'));
E=100;
xa=100;
i=0;
while(tol<E)
  xr=(xl+xu)/2;
  fxl=subs(f,x,xl);
  fxr=subs(f,x,xr);
  m=fxl*fxr;
  if(m)<0
        xu=xr;
    else
        xl=xr;
    end
    E=abs(xr-xa);
    xa=xr;
    i=i+1;
end
xr;
vpa(E,5)
set(handles.edit6,'string',xr);
set(handles.edit9,'string',E);
% --- Executes on button press in pushbutton4.

Best Answer

You're using functions from Symbolic Math Toolbox (in particular syms, subs, and vpa.) Symbolic Math Toolbox is not eligible for use with MATLAB Compiler.
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