SoPlex
Sequential object-oriented simPlex
Sequential object-oriented simPlex
Safe arrays of data objects.Class DataArray provides safe arrays of Data Objects. For general C++ objects (in contrast to data objects) class Array is provided which manages memory in a C++ compliant way. More...
#include <dataarray.h>
Public Member Functions | |
| T & | operator[] (int n) |
reference n 'th element. More... | |
| const T & | operator[] (int n) const |
reference n 'th const element. More... | |
| T & | last () |
| reference last element. More... | |
| const T & | last () const |
| reference last const element. More... | |
| T * | get_ptr () |
| get a C pointer to the data. More... | |
| const T * | get_const_ptr () const |
| get a const C pointer to the data. More... | |
| void | append (const T &t) |
append element t. More... | |
| void | append (int n, const T &t) |
append n elements with value t. More... | |
| void | append (int n, const T t[]) |
append n elements from t. More... | |
| void | append (const DataArray< T > &t) |
append all elements from t. More... | |
| void | insert (int i, int n) |
insert n uninitialized elements before i 'th element. More... | |
| void | insert (int i, int n, const T &t) |
insert n elements with value t before i 'the element. More... | |
| void | insert (int i, int n, const T t[]) |
insert n elements from t before i 'the element. More... | |
| void | insert (int i, const DataArray< T > &t) |
insert all elements from t before i 'th element. More... | |
| void | remove (int n=0, int m=1) |
remove m elements starting at n. More... | |
| void | removeLast (int m=1) |
remove m last elements. More... | |
| void | clear () |
| remove all elements. More... | |
| int | size () const |
| return nr. of elements. More... | |
| void | reSize (int newsize) |
reset size to newsize. More... | |
| int | max () const |
| return maximum number of elements. More... | |
| void | reMax (int newMax=1, int newSize=-1) |
| reset maximum number of elements. More... | |
| DataArray & | operator= (const DataArray &rhs) |
| assignment operator More... | |
| bool | isConsistent () const |
| consistency check More... | |
| DataArray (const DataArray &old) | |
| copy constructor More... | |
| DataArray (int p_size=0, int p_max=0, Real p_fac=1.2) | |
| default constructor. More... | |
| ~DataArray () | |
| destructor More... | |
Protected Attributes | |
| Real | memFactor |
| memory extension factor. More... | |
Private Attributes | |
| int | thesize |
| number of used elements in array data More... | |
| int | themax |
| the length of array data and More... | |
| T * | data |
| the array of elements More... | |
Safe arrays of data objects.
Class DataArray provides safe arrays of Data Objects. For general C++ objects (in contrast to data objects) class Array is provided which manages memory in a C++ compliant way.
The elements of an instance of DataArray can be accessed just like ordinary C++ array elements by means of the index operator[](). Safety is provided by
-DNDEBUG).Moreover, DataArrays may easily be extended by inserting or appending elements to the DataArray or shrunken by removing elements. Method reSize(int n) resets the DataArrays length to n thereby possibly appending elements or truncating the DataArray to the required size.
A DataArray may be used as arguments for standard C functions requiring pointers through the use of get_ptr() and get_const_ptr().
Internally, a DataArray object allocates a block of memory that fits up to max() elements, only size() of them are used. This makes extension and shrinking methods perform better.
Definition at line 63 of file dataarray.h.
copy constructor
Definition at line 315 of file dataarray.h.
default constructor.
The constructor allocates an Array containing size uninitialized elements. The internal array is allocated to have max nonzeros, and the memory extension factor is set to fac.
| p_size | number of unitialised elements. |
| p_max | maximum number of elements the array can hold. |
| p_fac | value for memFactor. |
Definition at line 340 of file dataarray.h.
| ~DataArray | ( | ) |
destructor
Definition at line 357 of file dataarray.h.
| void append | ( | const T & | t | ) |
append element t.
Definition at line 121 of file dataarray.h.
Referenced by SoPlex::_addColReal(), SoPlex::_addColsReal(), SoPlex::_addRowReal(), SoPlex::_addRowsReal(), SoPlex::_completeRangeTypesRational(), SoPlex::_lift(), SoPlex::_transformEquality(), SoPlex::_transformFeasibility(), SoPlex::_transformUnbounded(), SPxDevexPR::buildBestPriceVectorEnterCoDim(), SPxSteepPR::buildBestPriceVectorEnterCoDim(), SPxDevexPR::buildBestPriceVectorEnterDim(), SPxSteepPR::buildBestPriceVectorEnterDim(), SPxDevexPR::buildBestPriceVectorLeave(), SPxSteepPR::buildBestPriceVectorLeave(), SPxMainSM::operator=(), and SPxMainSM::SPxMainSM().
| void append | ( | int | n, |
| const T & | t | ||
| ) |
append n elements with value t.
Definition at line 126 of file dataarray.h.
| void append | ( | int | n, |
| const T | t[] | ||
| ) |
append n elements from t.
Definition at line 131 of file dataarray.h.
| void append | ( | const DataArray< T > & | t | ) |
append all elements from t.
Definition at line 136 of file dataarray.h.
| void clear | ( | ) |
remove all elements.
Definition at line 208 of file dataarray.h.
Referenced by SPxDevexPR::buildBestPriceVectorEnterCoDim(), SPxSteepPR::buildBestPriceVectorEnterCoDim(), SPxDevexPR::buildBestPriceVectorEnterDim(), SPxSteepPR::buildBestPriceVectorEnterDim(), SPxDevexPR::buildBestPriceVectorLeave(), SPxSteepPR::buildBestPriceVectorLeave(), LPColSetBase< Rational >::clear(), LPRowSetBase< Real >::clear(), SPxSolver::clear(), SoPlex::clearLPRational(), SoPlex::clearLPReal(), and SPxMainSM::operator=().
| const T* get_const_ptr | ( | ) | const |
get a const C pointer to the data.
Definition at line 115 of file dataarray.h.
Referenced by SoPlex::_decompSimplifyAndSolve(), SoPlex::_ensureRealLPLoaded(), SoPlex::_optimizeRational(), SoPlex::_performOptIRStable(), SoPlex::_preprocessAndSolveReal(), SoPlex::_restoreLPReal(), SoPlex::_storeSolutionReal(), SoPlex::_updateDecompReducedProblem(), SPxDevexPR::buildBestPriceVectorEnterCoDim(), SPxSteepPR::buildBestPriceVectorEnterCoDim(), SPxDevexPR::buildBestPriceVectorEnterDim(), SPxSteepPR::buildBestPriceVectorEnterDim(), SPxDevexPR::buildBestPriceVectorLeave(), SPxSteepPR::buildBestPriceVectorLeave(), SPxBasis::Desc::colStatus(), SPxBasis::Desc::coStatus(), soplex::initPrefs(), SPxBasis::Desc::rowStatus(), and SPxBasis::Desc::status().
| T* get_ptr | ( | ) |
get a C pointer to the data.
Definition at line 110 of file dataarray.h.
Referenced by SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_formDecompComplementaryProblem(), SoPlex::_formDecompReducedProblem(), SoPlex::_optimizeRational(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solveRealForRational(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_updateDecompReducedProblem(), SPxLPBase< Real >::added2Set(), SPxDevexPR::buildBestPriceVectorEnterCoDim(), SPxSteepPR::buildBestPriceVectorEnterCoDim(), SPxDevexPR::buildBestPriceVectorEnterDim(), SPxSteepPR::buildBestPriceVectorEnterDim(), SPxDevexPR::buildBestPriceVectorLeave(), SPxSteepPR::buildBestPriceVectorLeave(), SPxLPBase< Real >::buildDualProblem(), SoPlex::computeBasisInverseRational(), DataSet< soplex::SVSetBase::DLPSV >::remove(), LPColSetBase< Rational >::remove(), LPRowSetBase< Real >::remove(), SVSetBase< Rational >::remove(), SPxLPBase< Real >::removeColRange(), SoPlex::removeColRangeRational(), SoPlex::removeColRangeReal(), SPxLPBase< Real >::removeCols(), SoPlex::removeColsRational(), SoPlex::removeColsReal(), SPxLPBase< Real >::removeRowRange(), SoPlex::removeRowRangeRational(), SoPlex::removeRowRangeReal(), SPxLPBase< Real >::removeRows(), SoPlex::removeRowsRational(), and SoPlex::removeRowsReal().
| void insert | ( | int | i, |
| int | n | ||
| ) |
insert n uninitialized elements before i 'th element.
move n elements in memory from insert position i to the back
Definition at line 142 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::append(), and DataArray< const soplex::SVectorBase * >::insert().
| void insert | ( | int | i, |
| int | n, | ||
| const T & | t | ||
| ) |
insert n elements with value t before i 'the element.
Definition at line 157 of file dataarray.h.
| void insert | ( | int | i, |
| int | n, | ||
| const T | t[] | ||
| ) |
insert n elements from t before i 'the element.
Definition at line 169 of file dataarray.h.
| void insert | ( | int | i, |
| const DataArray< T > & | t | ||
| ) |
insert all elements from t before i 'th element.
Definition at line 179 of file dataarray.h.
| bool isConsistent | ( | ) | const |
consistency check
Definition at line 298 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::DataArray(), SPxWeightST::isConsistent(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::isConsistent(), SPxScaler::isConsistent(), SPxBasis::Desc::isConsistent(), and DataArray< const soplex::SVectorBase * >::operator=().
| T& last | ( | ) |
reference last element.
Definition at line 97 of file dataarray.h.
| const T& last | ( | ) | const |
reference last const element.
Definition at line 103 of file dataarray.h.
| int max | ( | ) | const |
return maximum number of elements.
Even though the DataArray currently holds no more than size() elements, up to max() elements could be added without need to reallocated free store.
Definition at line 243 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::DataArray().
assignment operator
Definition at line 284 of file dataarray.h.
| T& operator[] | ( | int | n | ) |
reference n 'th element.
Definition at line 82 of file dataarray.h.
| const T& operator[] | ( | int | n | ) | const |
reference n 'th const element.
Definition at line 89 of file dataarray.h.
| void reMax | ( | int | newMax = 1, |
| int | newSize = -1 |
||
| ) |
reset maximum number of elements.
The value of max() is reset to newMax thereby setting size() to newSize. However, if newSize has a value < 0 (as the default argument does) size() remains unchanged and max() is set to MIN(size(), newMax). Hence, calling reMax() without the default arguments, will reduce the memory consumption to a minimum. In no instance max() will be set to a value less than 1 (even if specified).
Definition at line 258 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::reSize(), SPxDevexPR::setType(), and SPxSteepPR::setType().
| void remove | ( | int | n = 0, |
| int | m = 1 |
||
| ) |
remove m elements starting at n.
Definition at line 189 of file dataarray.h.
| void removeLast | ( | int | m = 1 | ) |
remove m last elements.
Definition at line 202 of file dataarray.h.
Referenced by SoPlex::_removeColReal(), and SoPlex::_removeRowReal().
| void reSize | ( | int | newsize | ) |
reset size to newsize.
Resizing a DataArray to less than the previous size, involves discarding its last elements. Resizing to a larger value involves adding uninitialized elements (similar to append()). If neccessary, also memory will be reallocated.
| newsize | the new number of elements the array can hold. |
Definition at line 226 of file dataarray.h.
Referenced by SoPlex::_computeBasisInverseRational(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_factorizeColumnRational(), SoPlex::_formDecompReducedProblem(), SoPlex::_optimizeRational(), SoPlex::_project(), SoPlex::_recomputeRangeTypesRational(), SoPlex::_recomputeRangeTypesReal(), SoPlex::_removeColsReal(), SoPlex::_removeRowsReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solveRealForRational(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), SoPlex::_untransformEquality(), SoPlex::_untransformFeasibility(), SoPlex::_untransformUnbounded(), SoPlex::_updateDecompReducedProblem(), SoPlex::_writeOriginalProblemBasis(), LPColSetBase< Rational >::add(), LPRowSetBase< Real >::add(), SoPlex::computeBasisInverseRational(), LPColSetBase< Rational >::create(), LPRowSetBase< Real >::create(), SPxLPBase< Real >::doAddCols(), SPxLPBase< Real >::doAddRows(), SPxWeightST::generate(), SPxSolver::init(), DataArray< const soplex::SVectorBase * >::insert(), DataArray< const soplex::SVectorBase * >::operator=(), SoPlex::readBasisFile(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::reMax(), LPColSetBase< Rational >::reMax(), LPRowSetBase< Real >::reMax(), LPColSetBase< Rational >::remove(), LPRowSetBase< Real >::remove(), SoPlex::removeColRational(), SoPlex::removeColReal(), SoPlex::removeColsRational(), SoPlex::removeColsReal(), SoPlex::removeRowRational(), SoPlex::removeRowReal(), SoPlex::removeRowsRational(), SoPlex::removeRowsReal(), SPxBasis::Desc::reSize(), SoPlex::setBasis(), SPxSolver::setIntegralityInformation(), SPxScaler::setup(), SPxMainSM::simplify(), SPxMainSM::SPxMainSM(), and SPxMainSM::unsimplify().
| int size | ( | ) | const |
return nr. of elements.
Definition at line 214 of file dataarray.h.
Referenced by SoPlex::_completeRangeTypesRational(), SoPlex::_computeBasisInverseRational(), SoPlex::_decompResolveWithoutPreprocessing(), SoPlex::_decompSimplifyAndSolve(), SoPlex::_ensureRealLPLoaded(), SoPlex::_evaluateSolutionDecomp(), SoPlex::_factorizeColumnRational(), SoPlex::_isConsistent(), SoPlex::_optimizeRational(), SoPlex::_performOptIRStable(), SoPlex::_preprocessAndSolveReal(), SoPlex::_removeColReal(), SoPlex::_removeRowReal(), SoPlex::_resolveWithoutPreprocessing(), SoPlex::_solveDecompositionDualSimplex(), SoPlex::_solveRealForRational(), SoPlex::_storeSolutionReal(), SoPlex::_storeSolutionRealFromPresol(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::add(), SPxScaler::applyScaling(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::autoHashSize(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::autoHashSizeold(), SoPlex::basisColStatus(), SoPlex::basisRowStatus(), SPxDevexPR::buildBestPriceVectorEnterCoDim(), SPxSteepPR::buildBestPriceVectorEnterCoDim(), SPxDevexPR::buildBestPriceVectorEnterDim(), SPxSteepPR::buildBestPriceVectorEnterDim(), SPxDevexPR::buildBestPriceVectorLeave(), SPxSteepPR::buildBestPriceVectorLeave(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::clear(), SPxBasis::Desc::coDim(), SPxScaler::computeExpVec(), SPxBasis::Desc::dim(), SPxWeightST::generate(), SoPlex::getBasis(), SPxMainSM::getBasis(), SoPlex::getBasisInd(), SoPlex::getBasisIndRational(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::index(), soplex::initPrefs(), DataArray< const soplex::SVectorBase * >::insert(), SPxSolver::isBasisValid(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::isConsistent(), SPxScaler::maxAbsColscale(), SPxScaler::maxAbsRowscale(), SPxScaler::minAbsColscale(), SPxScaler::minAbsRowscale(), SPxBasis::Desc::nCols(), SPxBasis::Desc::nRows(), soplex::operator<<(), DataArray< const soplex::SVectorBase * >::operator=(), SPxMainSM::operator=(), SPxSolver::performSolutionPolishing(), DataHashTable< soplex::NameSet::Name, soplex::DataKey >::reMax(), DataArray< const soplex::SVectorBase * >::remove(), DataArray< const soplex::SVectorBase * >::removeLast(), SPxBasis::Desc::reSize(), SPxFastRT::selectEnter(), SPxFastRT::selectLeave(), SPxVectorST::setupWeights(), SPxMainSM::simplify(), SPxMainSM::unsimplify(), SoPlex::writeBasisFile(), and SPxMainSM::~SPxMainSM().
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private |
the array of elements
Definition at line 68 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::DataArray(), DataArray< const soplex::SVectorBase * >::get_const_ptr(), DataArray< const soplex::SVectorBase * >::get_ptr(), DataArray< const soplex::SVectorBase * >::insert(), and DataArray< const soplex::SVectorBase * >::operator=().
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protected |
memory extension factor.
When a DataArray is reSize()d to more than max() elements, the new value for max() is not just set to the new size but rather to memFactor * size. This makes reSizeing perform better in codes where a DataArray is extended often by a small number of elements only.
Definition at line 77 of file dataarray.h.
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private |
the length of array data and
Definition at line 67 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::max().
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private |
number of used elements in array data
Definition at line 66 of file dataarray.h.
Referenced by DataArray< const soplex::SVectorBase * >::insert(), and DataArray< const soplex::SVectorBase * >::size().