err.cpp

通过VC源代码

#include "stdafx.h"
#include "Simulator.h"
#include <sys\timeb.h>
  #include "TraceWnd.h"
#include "Regvars.h"
#include "NumericEdit.h"
  #include "InterruptMgt.h"
#include "SpinnerButton.h"
#include "register.h"
#include "RegData.h"
  #include "RegDisplay.h"
    #include "SimulatorDlg.h"
#include "err.h"

/****************************************************************************
*                       CSimulatorDlg::OnUpdateProbabilities
* Inputs:
*       WPARAM: code indicating which probability to update
*	LPARAM: new probability
* Result: LRESULT
*       0, always
* Effect: 
*       Stores the selected probability in its associated variable
****************************************************************************/

LRESULT CSimulatorDlg::OnUpdateProbabilities(WPARAM wParam, LPARAM lParam)
    {
     switch(wParam)
        { /* which one */
	 case PROB_ERR:
		 {
		  RegistryInt pErr(IDS_PROB_ERR);
		  ProbErr = lParam;
		  pErr.value = lParam;
		  pErr.store();
		 }
		 break;
	 case PROB_LOST:
		 { 
		  RegistryInt pLost(IDS_PROB_LOST);
		  ProbLost = lParam;
		  pLost.value = lParam;
		  pLost.store();
		 }
		 break;
	 case PROB_SPURIOUS:
		 {
		  RegistryInt pSpurious(IDS_PROB_SPURIOUS);
		  ProbSpurious = lParam;
		  pSpurious.value = lParam;
		  pSpurious.store();
		 }
		 break;
	 case PROB_OVRUND:
		 {
		  RegistryInt pOvrUnd(IDS_PROB_OVR_UND);
		  ProbOvrUnd = lParam;
		  pOvrUnd.value = lParam;
		  pOvrUnd.store();
		 }
		 break;
	} /* which one */
     return 0;
    }

/****************************************************************************
*                          CSimulatorDlg::injectErr
* Result: BOOL
*       TRUE if an error should be injected
*	FALSE for no error
* Notes: 
*       If error injection is disabled, this always returns FALSE
*	If error injection is enabled, this will be based on the probability
*	of error set by the configuration panel and stored in ProbErr
****************************************************************************/

BOOL CSimulatorDlg::injectErr()
    {
     return prob(c_Errors, ProbErr);
    }

/****************************************************************************
*                          CSimulatorDlg::injectOvrUnd
* Result: BOOL
*       TRUE if an OVR/UND error should be injected
*	FALSE if not
* Notes: 
*       
****************************************************************************/

BOOL CSimulatorDlg::injectOvrUnd()
    {
     return prob(c_OverUnder, ProbOvrUnd);
    }

/****************************************************************************
*                              CSimulatorDlg::prob
* Inputs:
*       CButton & ctl: Control to be checked
*	DWORD p: Probability value being an error (0..100)
* Result: BOOL
*       TRUE if
*	FALSE if
****************************************************************************/

BOOL CSimulatorDlg::prob(CButton & ctl, DWORD p)
    {
     if(ctl.GetCheck() == BST_UNCHECKED)
	return FALSE;

     if(p == 0)
	return FALSE;

     DWORD n = rand() % 100;
     if(n < p)
	return TRUE;

     return FALSE;
    }