Click here to Skip to main content
13,299,727 members (67,726 online)
Click here to Skip to main content


159 bookmarked
Posted 17 Dec 2001

CRC32: Generating a checksum for a file

, 17 Dec 2001
How to generate a CRC32 based on a file
#include "stdafx.h"
#include "HiResTimer.h"

CHiResTimer::CHiResTimer() : m_qwStart(0), m_qwStop(0)
	m_bTimerInstalled = QueryPerformanceFrequency((LARGE_INTEGER*)&m_qwFreq) ? true : false;

void CHiResTimer::Start(void)

void CHiResTimer::Stop(void)

float CHiResTimer::GetTime(void) const
	float fTime = 0.0;
	if(m_bTimerInstalled && m_qwFreq != 0)
		fTime = (float)((m_qwStop - m_qwStart) / (float)m_qwFreq);

	return fTime;

void CHiResTimer::Reset(void)
	m_qwStart = m_qwStop = 0;

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Brian Friesen
Web Developer
United States United States
No Biography provided

You may also be interested in...

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.171207.1 | Last Updated 18 Dec 2001
Article Copyright 2001 by Brian Friesen
Everything else Copyright © CodeProject, 1999-2017
Layout: fixed | fluid