#define S_FUNCTION_NAME  test//这里把文件名sfuntmpl_basic修改为test
#define S_FUNCTION_LEVEL 2
#include "simstruc.h"
//程序里面要用到的头文件在这里引用，如“math.h”等。
float global_var; //定义全局变量
static void mdlInitializeSizes(SimStruct *S)
{//这个函数用来设置输入、输出和参数的。ssSetNumSFcnParams(S, 3);  /*设置参数个数，这里为3 */if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) {return;}ssSetNumContStates(S, 0);//设置连续状态的个数，缺省为0；ssSetNumDiscStates(S, 0);//设置离散状态的个数，缺省为0；if (!ssSetNumInputPorts(S, 1)) return;//设置输入变量的个数，这里为1ssSetInputPortWidth(S, 0, 2); //设置输入变量0的维数为2
ssSetInputPortRequiredContiguous(S, 0, true); //设置input0的访问方式，true就是临近访问，这样指针的增量后就可以直接访问下个input端口了。
ssSetInputPortDirectFeedThrough(S, 0, 1);// 设置输入端口的信号是否mdlOutputs函数中使用，这儿设置为true。if (!ssSetNumOutputPorts(S, 2)) return;//设置输出变量的个数
ssSetOutputPortWidth(S, 0, 1);//设置输出变量0的维数为1维ssSetOutputPortWidth(S, 1, 1);//设置输出变量1的维数为1维
ssSetNumSampleTimes(S, 1); //设置采样时间，此处为1s。ssSetNumRWork(S, 0);//不管ssSetNumIWork(S, 0);ssSetNumPWork(S, 0);ssSetNumModes(S, 0);ssSetNumNonsampledZCs(S, 0);
ssSetOptions(S, 0);
//下面可以写全局变量的初始化程序
global_var=1;
}
static void mdlInitializeSampleTimes(SimStruct *S)//暂时不管
{ssSetSampleTime(S, 0, CONTINUOUS_SAMPLE_TIME);ssSetOffsetTime(S, 0, 0.0);}
#define MDL_INITIALIZE_CONDITIONS   /* Change to #undef to remove function */
#if defined(MDL_INITIALIZE_CONDITIONS)static void mdlInitializeConditions(SimStruct *S)//暂时不管
  {}
#endif /* MDL_INITIALIZE_CONDITIONS */
#define MDL_START  /* Change to #undef to remove function */
#if defined(MDL_START) static void mdlStart(SimStruct *S)//暂时不管
  {}
#endif /*  MDL_START */
static void mdlOutputs(SimStruct *S, int_T tid)//这里填入相关的运算、算法等
{
real_T *para1 = mxGetPr(ssGetSFcnParam(S,0));
real_T *para2 = mxGetPr(ssGetSFcnParam(S,1));
real_T *para3 = mxGetPr(ssGetSFcnParam(S,2));
const real_T *u = (const real_T*) ssGetInputPortSignal(S,0);
real_T       *y1 = ssGetOutputPortSignal(S,0);
real_T       *y2 = ssGetOutputPortSignal(S,1);
y1[0]=u[0]*para1[0]+u[1]*para2[0];
y2[0]=u[1]*para3[0]+u[0]*para1[0];
}
#define MDL_UPDATE  /* Change to #undef to remove function */
#if defined(MDL_UPDATE)static void mdlUpdate(SimStruct *S, int_T tid){}
#endif /* MDL_UPDATE */
#define MDL_DERIVATIVES  /* Change to #undef to remove function */
#if defined(MDL_DERIVATIVES)static void mdlDerivatives(SimStruct *S){}
#endif /* MDL_DERIVATIVES */
static void mdlTerminate(SimStruct *S)//这里需要把global变量全部初始化，否则下次运行程序时，全局变量还是之前的值。
{
}#ifdef  MATLAB_MEX_FILE    /* Is this file being compiled as a MEX-file? */
#include "simulink.c"      /* MEX-file interface mechanism */
#else
#include "cg_sfun.h"       /* Code generation registration function */
#endif