syntax to pass x0 values (for fsolve) from constant blocks to interpreted matlab function

i use a interpeted matlab function to do fsolve inside simulink and i used constant blocks with a mux to supply the needed parameters.

is there a possibility to do the same with x0? if yes, what would the syntax be? i tried x0=[u(5),u(6),u(7)] or just [u(5),u(6),u(7)], but none of them seems to work.

fsolve(@(x)myfun(x,u(1),u(2),u(3),u(4)),x0,optimset('MaxFunEvals', 100, 'FunValCheck', 'on','MaxIter', 800000,'TolX', 1e-60,'TolFun', 1e-60))

best regards

Answer 1

[Kaustubha Govind]

You should probably create a wrapper function that has the two lines:

function y = callFsolve(u)
  x0=[u(5),u(6),u(7)];
  y = fsolve(@(x)myfun(x,u(1),u(2),u(3),u(4)),x0,optimset('MaxFunEvals', 100, 'FunValCheck', 'on','MaxIter', 800000,'TolX', 1e-60,'TolFun', 1e-60));

And then call callFsolve(u) from the block dialog. If it still doesn't work, you could set a breakpoint in your code to see what it going wrong.