how i can use symbolic variables in embeded matlab block in simulink?

I want to find definite integral of an exponential function in simulink. I have performed this task in matlab .m file. as

syms y f=exp((-y.^2)/2); F=int(f); Fb=subs(F,'y',Inf); Fa=subs(F,'y',sqrt(SNR)); def=Fb-Fa; out=def*(1/sqrt(2*pi)) now i am trying to run this code in embeded matlab function in a simulink file as user defined function.Simulink model is giving me this error "Command-duality is not supported. Function 'Embedded MATLAB Function' (#148.30.37), line 3, column 1: "syms y""

please help me out in declaring symbolic variable in simulink file.

Answer 1

[Friedrich]

Hi,

try at the top

coder.extrinsic('syms')

http://www.mathworks.com/help/simulink/slref/coder.extrinsic.html

Maybe you also need to do that with subds, int exp etc.

[sidra jabeen]

Undefined function or variable 'coder'.

[Friedrich]

Seems like you are using an older version of MATLAB. Try

eml.extrinsic

instead.