In this article, you will find a fast generator for Random Variable, namely normal and exponential distributions. It is based on George Marsaglia's and Wai Wan Tsang's work.
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#if !defined(AFX_PGLGRAPHVIEW_H__D2A5BBE5_2C7A_41A6_8F22_9959D09CD057__INCLUDED_)
#define AFX_PGLGRAPHVIEW_H__D2A5BBE5_2C7A_41A6_8F22_9959D09CD057__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// PGLGraphView.h : header file
//
#include "PGLGraph.h"
/////////////////////////////////////////////////////////////////////////////
// CPGLGraphView view
class PGL_EXT_CLASS CPGLGraphView : public CView
{
protected:
CPGLGraphView(); // protected constructor used by dynamic creation
DECLARE_DYNCREATE(CPGLGraphView)
// Attributes
public:
// Operations
public:
CMenu* LoadMenu();
// Sets the CPGLGraph object to plot on view
void SetGraph(CPGLGraph* pGraph);
CPGLGraph* GetGraph() { return m_pGraph;};
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CPGLGraphView)
public:
protected:
virtual void OnDraw(CDC* pDC); // overridden to draw this view
virtual void OnPrint(CDC* pDC, CPrintInfo* pInfo);
virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
//}}AFX_VIRTUAL
// Implementation
protected:
virtual ~CPGLGraphView();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif
// Generated message map functions
protected:
CPGLMouse m_mouse;
CPGLGraph* m_pGraph;
int m_iMouseMode;
gfxinterface::CGDIpInterface m_GDIpInterface;
#ifndef _DEBUG
Gdiplus::Bitmap* m_pMemBitmap;
#endif
//{{AFX_MSG(CPGLGraphView)
afx_msg void OnSize(UINT nType, int cx, int cy);
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
afx_msg BOOL OnEraseBkgnd(CDC* pDC);
afx_msg void OnDestroy();
afx_msg void OnEditCopy();
afx_msg void OnObjectsExplorer();
afx_msg void OnPglFileExport();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
/////////////////////////////////////////////////////////////////////////////
//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_PGLGRAPHVIEW_H__D2A5BBE5_2C7A_41A6_8F22_9959D09CD057__INCLUDED_)
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Jonathan de Halleux is Civil Engineer in Applied Mathematics. He finished his PhD in 2004 in the rainy country of Belgium. After 2 years in the Common Language Runtime (i.e. .net), he is now working at Microsoft Research on Pex (http://research.microsoft.com/pex).