function [sys,x0,str,ts,simStateCompliance] = int_hyo(t,x,u,flag) switch flag, case 0, [sys,x0,str,ts,simStateCompliance]=mdlInitializeSizes; case 1, sys=mdlDerivatives(t,x,u); case 2, sys=mdlUpdate(t,x,u); case 3, sys=mdlOutputs(t,x,u); case 4, sys=…