Category : C Source Code
Archive   : ZTIMER20.ZIP
Filename : ZTIMER.CPP

/****************************************************************************
*
* The Zen Timer Library
*
* From the book
* "Zen of Assembly Language"
* Volume 1, Knowledge
*
* by Michael Abrash
*
* Modifications by Kendall Bennett
* Copyright (C) 1993-4 SciTech Software
*
* Filename: $RCSfile: ztimer.cpp $
* Version: $Revision: 1.6 $
*
* Language: C++ 2.1
* Environment: IBM PC (MS DOS)
*
* Description: Non-inline member functions for the C++ class interface
* to the Zen Timer Library.
*
* $Id: ztimer.cpp 1.6 1994/08/22 11:56:13 kjb release $
*
****************************************************************************/

#include
#include
#include "pmode.h"
#include "ztimer.h"

/*----------------------------- Implementation ----------------------------*/

// Compute the time elapsed between calls to LZTimerOn() and LZTimerOff()
// and add it to the current count.

void LZTimer::computeTime()
{
if (!overflow()) {
ulong newcount = LZTimerCount();
if (newcount == 0xFFFFFFFFL)
_overflow = true;
else
_count += newcount;
}
}

// Routine to stop the ultra long period timer. The timer resolution is low
// enough to make this routine non-inline.

void ULZTimer::stop()
{
_finish = ULZReadTime();
_count += ULZElapsedTime(_start,_finish);
}

ostream& operator << (ostream& o,LZTimer& timer)
{
char buf[40];

if (!timer.overflow()) {
sprintf(buf, "%.6f", timer.count() * timer.resolution());
o << buf;
}
else
o << "overflow";
return o;
}

ostream& operator << (ostream& o,ULZTimer& timer)
{
char buf[40];

sprintf(buf, "%.1f", timer.count() * timer.resolution());
return o << buf;
}