stopwatch.asv

OFDM限幅类峰均比,用于仿真OFDM系统中的限幅类峰均比。

/*  File    : stopwatch.cpp
 *  Abstract:
 *
 *      Example of an C++ S-function which stores an C++ object in
 *      the pointers vector PWork.
 *
 *  Copyright 1990-2002 The MathWorks, Inc.
 *  $Revision: 1.4 $
 */

#include "iostream.h"
#include "matrix.h"
#include "libmatlbm.h"

#ifdef __cplusplus
extern "C" { // use the C fcn-call standard for all functions  
#endif       // defined within this scope                     

#define S_FUNCTION_LEVEL 2
#define S_FUNCTION_NAME  stopwatch

/*
 * Need to include simstruc.h for the definition of the SimStruct and
 * its associated macro definitions.
 */
#include "simstruc.h"

real_T* beginTime = NULL ;

/*====================*
 * S-function methods *
 *====================*/

/* Function: mdlInitializeSizes ===============================================
 * Abstract:
 *    The sizes information is used by Simulink to determine the S-function
 *    block's characteristics (number of inputs, outputs, states, etc.).
 */
static void mdlInitializeSizes(SimStruct *S)
{
    /* See sfuntmpl.doc for more details on the macros below */

    ssSetNumContStates(S, 0);
    ssSetNumDiscStates(S, 0);

    if (!ssSetNumInputPorts(S, 0)) return;
    
    if (!ssSetNumOutputPorts(S, 1)) return;
    ssSetOutputPortWidth(S, 0, 1);

    ssSetNumSampleTimes(S, 1);
    ssSetNumRWork(S, 0);
    ssSetNumIWork(S, 0);
    ssSetNumPWork(S, 1); // reserve element in the pointers vector
    ssSetNumModes(S, 0); // to store a C++ object
    ssSetNumNonsampledZCs(S, 0);

    ssSetOptions(S, 0);
    
}



/* Function: mdlInitializeSampleTimes =========================================
 * Abstract:
 *    This function is used to specify the sample time(s) for your
 *    S-function. You must register the same number of sample times as
 *    specified in ssSetNumSampleTimes.
 */
static void mdlInitializeSampleTimes(SimStruct *S)
{
    ssSetSampleTime(S, 0, 0);
    ssSetOffsetTime(S, 0, 0.0);

}

#define MDL_START  /* Change to #undef to remove function */
#if defined(MDL_START) 
  /* Function: mdlStart =======================================================
   * Abstract:
   *    This function is called once at start of model execution. If you
   *    have states that should be initialized once, this is the place
   *    to do it.
   */
  static void mdlStart(SimStruct *S)
  {
      beginTime = mxGetPr(mlfCputime());
  }                                            // pointers vector
#endif /*  MDL_START */

/* Function: mdlOutputs =======================================================
 * Abstract:
 *    In this function, you compute the outputs of your S-function
 *    block. Generally outputs are placed in the output vector, ssGetY(S).
 */
static void mdlOutputs(SimStruct *S, int_T tid)
{
    real_T  *y = ssGetOutputPortRealSignal(S,0); // the pointers vector and use
    
    real_T *now_time = mxGetPr(mlfCputime());

    *y = (*now_time) - (*beginTime) ; 
}                                                // object

/* Function: mdlTerminate =====================================================
 * Abstract:
 *    In this function, you should perform any actions that are necessary
 *    at the termination of a simulation.  For example, if memory was
 *    allocated in mdlStart, this is the place to free it.
 */
static void mdlTerminate(SimStruct *S)
{
}                                              // function
/*======================================================*
 * See sfuntmpl.doc for the optional S-function methods *
 *======================================================*/

/*=============================*
 * Required S-function trailer *
 *=============================*/

#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

#ifdef __cplusplus
} // end of extern "C" scope
#endif