Use "solution converged to an infeasible point" as an input

i am using fmincon to optimize f:

[X,f]=fmincon(@(X) obj_function(X,P,Pd,intervalotiempo),X0,A,B,Aeq,Beq,LB,UB,nonlin);

I would like to use the output of this operation in a way that if the solution converged to an infeasible point the program stops. How could I make this possible?

Answer 1

[Stephan]

Use the output exitflag to find out if there was no feasible point:

[x,fval,exitflag,output] = fmincon(@(X) obj_function(X,P,Pd,intervalotiempo),X0,A,B,Aeq,Beq,LB,UB,nonlin);

If the exitflag = -2 then there was no feasible point found.