How to put "error function, erf(x)" in simulink

How to put "error function, erf(x)" in simulink for processing an input signal. I tried to formulate in "matlab functions block" but was getting error.

Answer 1

[Ugur Keskin]

This can be done with the block 'Matlab function' which can also be found in the 'User-Defined functions' library of Simulink.

Just insert the following in the m-funtion:

   function y = fcn(u)

   y = erf(u);

y will be the error function of u.