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/* $Id: $
* ===========================================================================
*
* PUBLIC DOMAIN NOTICE
* National Center for Biotechnology Information
*
* This software/database is a "United States Government Work" under the
* terms of the United States Copyright Act. It was written as part of
* the author's offical duties as a United States Government employee and
* thus cannot be copyrighted. This software/database is freely available
* to the public for use. The National Library of Medicine and the U.S.
* Government have not placed any restriction on its use or reproduction.
*
* Although all reasonable efforts have been taken to ensure the accuracy
* and reliability of the software and data, the NLM and the U.S.
* Government do not and cannot warrant the performance or results that
* may be obtained by using this software or data. The NLM and the U.S.
* Government disclaim all warranties, express or implied, including
* warranties of performance, merchantability or fitness for any particular
* purpose.
*
* Please cite the author in any work or product based on this material.
*
* ===========================================================================*/
/*****************************************************************************
File name: njn_dynprogproblim.cpp
Author: John Spouge
Contents:
******************************************************************************/
#include <assert.h>
#include "njn_dynprogproblim.hpp"
#include "njn_memutil.hpp"
using namespace Njn;
void DynProgProbLim::setLimits (
long int valueBegin_, // range for values is [valueBegin_, valueEnd_).
long int valueEnd_) // range for values is [valueBegin_, valueEnd_).
// assert (valueBegin_ < valueEnd_);
{
assert (valueBegin_ < valueEnd_);
// take care of lost probability
long int value = 0;
for (value = getValueLower (); value < valueBegin_; value++)
{
d_probLost += getProb (value);
}
for (value = valueEnd_; value < getValueUpper (); value++)
{
d_probLost += getProb (value);
}
size_t arrayCapacity = static_cast <size_t> (valueEnd_ - valueBegin_);
if (getArrayCapacity () <= arrayCapacity)
{
reserve (arrayCapacity);
setValueBegin (valueBegin_);
}
else
{
setValueBegin (valueBegin_);
reserve (arrayCapacity);
}
}
void DynProgProbLim::reserve (size_t arrayCapacity_) // new array capacity
// reduces capacity of and copies d_array_p from its begin
{
if (arrayCapacity_ == getArrayCapacity ()) return;
if (getArrayCapacity () < arrayCapacity_)
{
DynProgProb::reserve (arrayCapacity_);
return;
}
assert (arrayCapacity_ < getArrayCapacity ());
double *array = new double [getArrayCapacity ()];
for (size_t i = 0; i < 2; i++)
{
MemUtil::memCpy (array, getArray () [i], sizeof (double) * arrayCapacity_);
delete [] lgetArray () [i]; lgetArray () [i] = 0;
lgetArray () [i] = new double [arrayCapacity_];
MemUtil::memCpy (lgetArray () [i], array, sizeof (double) * arrayCapacity_);
}
lgetArrayCapacity () = arrayCapacity_;
delete [] array; array = 0;
}
void DynProgProbLim::setValueBegin (long int valueBegin_)
// resets the offset d_valueBegin
// assert (offSet < getArrayCapacity ());
// if (getValueBegin () < valueBegin_) the caller must ensure consistency
{
if (valueBegin_ <= getValueBegin ())
{
DynProgProb::setValueBegin (valueBegin_);
return;
}
assert (getValueBegin () < valueBegin_);
size_t offSet = static_cast <size_t> (valueBegin_ - getValueBegin ());
double *array = new double [getArrayCapacity ()];
for (size_t i = 0; i < 2; i++)
{
MemUtil::memCpy (array, getArray () [i], sizeof (double) * getArrayCapacity ());
MemUtil::memZero (lgetArray () [i], sizeof (double) * getArrayCapacity ());
if (offSet < getArrayCapacity ())
{
MemUtil::memCpy (lgetArray () [i], array + offSet, sizeof (double) * (getArrayCapacity () - offSet));
}
}
delete [] array; array = 0;
lgetValueBegin () = valueBegin_;
}
void DynProgProbLim::update () // updates dynamic prog probs
{
assert (getValueFct ());
assert (getDimInputProb ());
assert (getInputProb ());
assert (0 < getArrayCapacity ());
long int i = 0;
size_t j = 0;
const double *oldArray = 0;
double *array = 0;
long int value = 0;
long int valueLower = 0;
long int valueUpper = 0;
/*sls deleted size_t arrayPos = 0;*/
double prob = 0.0;
oldArray = getArray () [getStep () % 2];
array = lgetArray () [(getStep () + 1) % 2];
valueLower = LONG_MAX;
valueUpper = LONG_MIN;
MemUtil::memZero (array, sizeof (double) * getArrayCapacity ());
for (i = getValueLower (); i < getValueUpper (); i++)
{
if (oldArray [getArrayPos (i)] == 0.0) continue;
for (j = 0; j < getDimInputProb (); j++)
{
if (getInputProb () [j] == 0.0) continue;
value = getValueFct () (i, j);
prob = oldArray [getArrayPos (i)] * getInputProb () [j];
if (value < getValueBegin () || getValueEnd () <= value)
{
d_probLost += prob;
}
else
{
if (value < valueLower) valueLower = value;
if (valueUpper < value) valueUpper = value;
// add the probability
assert (getValueBegin () <= i);
assert (i < getValueEnd ());
array [getArrayPos (value)] += prob;
}
}
}
lgetValueLower () = valueLower;
lgetValueUpper () = valueUpper + 1;
lgetStep ()++;
}
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