diff options
author | Harpreet | 2016-09-03 00:36:51 +0530 |
---|---|---|
committer | Harpreet | 2016-09-03 00:36:51 +0530 |
commit | a0d9443af147e949c1e6a01ac24749d12593ec5b (patch) | |
tree | 1a1955c5482ae608fd7f618b06f4ecc6a0d39a23 /thirdparty/linux/include/coin/CoinPackedVector.hpp | |
parent | 4b64cf486f5c999fd8167758cae27839f3b50848 (diff) | |
download | FOSSEE-Optim-toolbox-development-a0d9443af147e949c1e6a01ac24749d12593ec5b.tar.gz FOSSEE-Optim-toolbox-development-a0d9443af147e949c1e6a01ac24749d12593ec5b.tar.bz2 FOSSEE-Optim-toolbox-development-a0d9443af147e949c1e6a01ac24749d12593ec5b.zip |
cbcintlinprog added
Diffstat (limited to 'thirdparty/linux/include/coin/CoinPackedVector.hpp')
-rw-r--r-- | thirdparty/linux/include/coin/CoinPackedVector.hpp | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/thirdparty/linux/include/coin/CoinPackedVector.hpp b/thirdparty/linux/include/coin/CoinPackedVector.hpp new file mode 100644 index 0000000..9ea1feb --- /dev/null +++ b/thirdparty/linux/include/coin/CoinPackedVector.hpp @@ -0,0 +1,657 @@ +/* $Id: CoinPackedVector.hpp 1509 2011-12-05 13:50:48Z forrest $ */ +// Copyright (C) 2000, International Business Machines +// Corporation and others. All Rights Reserved. +// This code is licensed under the terms of the Eclipse Public License (EPL). + +#ifndef CoinPackedVector_H +#define CoinPackedVector_H + +#include <map> + +#include "CoinPragma.hpp" +#include "CoinPackedVectorBase.hpp" +#include "CoinSort.hpp" + +#ifdef COIN_FAST_CODE +#ifndef COIN_NOTEST_DUPLICATE +#define COIN_NOTEST_DUPLICATE +#endif +#endif + +#ifndef COIN_NOTEST_DUPLICATE +#define COIN_DEFAULT_VALUE_FOR_DUPLICATE true +#else +#define COIN_DEFAULT_VALUE_FOR_DUPLICATE false +#endif +/** Sparse Vector + +Stores vector of indices and associated element values. +Supports sorting of vector while maintaining the original indices. + +Here is a sample usage: +@verbatim + const int ne = 4; + int inx[ne] = { 1, 4, 0, 2 } + double el[ne] = { 10., 40., 1., 50. } + + // Create vector and set its value + CoinPackedVector r(ne,inx,el); + + // access each index and element + assert( r.indices ()[0]== 1 ); + assert( r.elements()[0]==10. ); + assert( r.indices ()[1]== 4 ); + assert( r.elements()[1]==40. ); + assert( r.indices ()[2]== 0 ); + assert( r.elements()[2]== 1. ); + assert( r.indices ()[3]== 2 ); + assert( r.elements()[3]==50. ); + + // access original position of index + assert( r.originalPosition()[0]==0 ); + assert( r.originalPosition()[1]==1 ); + assert( r.originalPosition()[2]==2 ); + assert( r.originalPosition()[3]==3 ); + + // access as a full storage vector + assert( r[ 0]==1. ); + assert( r[ 1]==10.); + assert( r[ 2]==50.); + assert( r[ 3]==0. ); + assert( r[ 4]==40.); + + // sort Elements in increasing order + r.sortIncrElement(); + + // access each index and element + assert( r.indices ()[0]== 0 ); + assert( r.elements()[0]== 1. ); + assert( r.indices ()[1]== 1 ); + assert( r.elements()[1]==10. ); + assert( r.indices ()[2]== 4 ); + assert( r.elements()[2]==40. ); + assert( r.indices ()[3]== 2 ); + assert( r.elements()[3]==50. ); + + // access original position of index + assert( r.originalPosition()[0]==2 ); + assert( r.originalPosition()[1]==0 ); + assert( r.originalPosition()[2]==1 ); + assert( r.originalPosition()[3]==3 ); + + // access as a full storage vector + assert( r[ 0]==1. ); + assert( r[ 1]==10.); + assert( r[ 2]==50.); + assert( r[ 3]==0. ); + assert( r[ 4]==40.); + + // Restore orignal sort order + r.sortOriginalOrder(); + + assert( r.indices ()[0]== 1 ); + assert( r.elements()[0]==10. ); + assert( r.indices ()[1]== 4 ); + assert( r.elements()[1]==40. ); + assert( r.indices ()[2]== 0 ); + assert( r.elements()[2]== 1. ); + assert( r.indices ()[3]== 2 ); + assert( r.elements()[3]==50. ); + + // Tests for equality and equivalence + CoinPackedVector r1; + r1=r; + assert( r==r1 ); + assert( r.equivalent(r1) ); + r.sortIncrElement(); + assert( r!=r1 ); + assert( r.equivalent(r1) ); + + // Add packed vectors. + // Similarly for subtraction, multiplication, + // and division. + CoinPackedVector add = r + r1; + assert( add[0] == 1.+ 1. ); + assert( add[1] == 10.+10. ); + assert( add[2] == 50.+50. ); + assert( add[3] == 0.+ 0. ); + assert( add[4] == 40.+40. ); + + assert( r.sum() == 10.+40.+1.+50. ); +@endverbatim +*/ +class CoinPackedVector : public CoinPackedVectorBase { + friend void CoinPackedVectorUnitTest(); + +public: + /**@name Get methods. */ + //@{ + /// Get the size + virtual int getNumElements() const { return nElements_; } + /// Get indices of elements + virtual const int * getIndices() const { return indices_; } + /// Get element values + virtual const double * getElements() const { return elements_; } + /// Get indices of elements + int * getIndices() { return indices_; } + /// Get the size + inline int getVectorNumElements() const { return nElements_; } + /// Get indices of elements + inline const int * getVectorIndices() const { return indices_; } + /// Get element values + inline const double * getVectorElements() const { return elements_; } + /// Get element values + double * getElements() { return elements_; } + /** Get pointer to int * vector of original postions. + If the packed vector has not been sorted then this + function returns the vector: 0, 1, 2, ..., size()-1. */ + const int * getOriginalPosition() const { return origIndices_; } + //@} + + //------------------------------------------------------------------- + // Set indices and elements + //------------------------------------------------------------------- + /**@name Set methods */ + //@{ + /// Reset the vector (as if were just created an empty vector) + void clear(); + /** Assignment operator. <br> + <strong>NOTE</strong>: This operator keeps the current + <code>testForDuplicateIndex</code> setting, and affter copying the data + it acts accordingly. */ + CoinPackedVector & operator=(const CoinPackedVector &); + /** Assignment operator from a CoinPackedVectorBase. <br> + <strong>NOTE</strong>: This operator keeps the current + <code>testForDuplicateIndex</code> setting, and affter copying the data + it acts accordingly. */ + CoinPackedVector & operator=(const CoinPackedVectorBase & rhs); + + /** Assign the ownership of the arguments to this vector. + Size is the length of both the indices and elements vectors. + The indices and elements vectors are copied into this class instance's + member data. The last argument indicates whether this vector will have + to be tested for duplicate indices. + */ + void assignVector(int size, int*& inds, double*& elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + + /** Set vector size, indices, and elements. + Size is the length of both the indices and elements vectors. + The indices and elements vectors are copied into this class instance's + member data. The last argument specifies whether this vector will have + to be checked for duplicate indices whenever that can happen. */ + void setVector(int size, const int * inds, const double * elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + + /** Elements set to have the same scalar value */ + void setConstant(int size, const int * inds, double elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + + /** Indices are not specified and are taken to be 0,1,...,size-1 */ + void setFull(int size, const double * elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + + /** Indices are not specified and are taken to be 0,1,...,size-1, + but only where non zero*/ + void setFullNonZero(int size, const double * elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + + /** Set an existing element in the packed vector + The first argument is the "index" into the elements() array + */ + void setElement(int index, double element); + + /// Insert an element into the vector + void insert(int index, double element); + /// Append a CoinPackedVector to the end + void append(const CoinPackedVectorBase & caboose); + + /// Swap values in positions i and j of indices and elements + void swap(int i, int j); + + /** Resize the packed vector to be the first newSize elements. + Problem with truncate: what happens with origIndices_ ??? */ + void truncate(int newSize); + //@} + + /**@name Arithmetic operators. */ + //@{ + /// add <code>value</code> to every entry + void operator+=(double value); + /// subtract <code>value</code> from every entry + void operator-=(double value); + /// multiply every entry by <code>value</code> + void operator*=(double value); + /// divide every entry by <code>value</code> + void operator/=(double value); + //@} + + /**@name Sorting */ + //@{ + /** Sort the packed storage vector. + Typcical usages: + <pre> + packedVector.sort(CoinIncrIndexOrdered()); //increasing indices + packedVector.sort(CoinIncrElementOrdered()); // increasing elements + </pre> + */ + template <class CoinCompare3> + void sort(const CoinCompare3 & tc) + { CoinSort_3(indices_, indices_ + nElements_, origIndices_, elements_, + tc); } + + void sortIncrIndex() + { CoinSort_3(indices_, indices_ + nElements_, origIndices_, elements_, + CoinFirstLess_3<int, int, double>()); } + + void sortDecrIndex() + { CoinSort_3(indices_, indices_ + nElements_, origIndices_, elements_, + CoinFirstGreater_3<int, int, double>()); } + + void sortIncrElement() + { CoinSort_3(elements_, elements_ + nElements_, origIndices_, indices_, + CoinFirstLess_3<double, int, int>()); } + + void sortDecrElement() + { CoinSort_3(elements_, elements_ + nElements_, origIndices_, indices_, + CoinFirstGreater_3<double, int, int>()); } + + + /** Sort in original order. + If the vector has been sorted, then this method restores + to its orignal sort order. + */ + void sortOriginalOrder(); + //@} + + /**@name Memory usage */ + //@{ + /** Reserve space. + If one knows the eventual size of the packed vector, + then it may be more efficient to reserve the space. + */ + void reserve(int n); + /** capacity returns the size which could be accomodated without + having to reallocate storage. + */ + int capacity() const { return capacity_; } + //@} + /**@name Constructors and destructors */ + //@{ + /** Default constructor */ + CoinPackedVector(bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + /** \brief Alternate Constructors - set elements to vector of doubles + + This constructor copies the vectors provided as parameters. + */ + CoinPackedVector(int size, const int * inds, const double * elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + /** \brief Alternate Constructors - set elements to vector of doubles + + This constructor takes ownership of the vectors passed as parameters. + \p inds and \p elems will be NULL on return. + */ + CoinPackedVector(int capacity, int size, int *&inds, double *&elems, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + /** Alternate Constructors - set elements to same scalar value */ + CoinPackedVector(int size, const int * inds, double element, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + /** Alternate Constructors - construct full storage with indices 0 through + size-1. */ + CoinPackedVector(int size, const double * elements, + bool testForDuplicateIndex = COIN_DEFAULT_VALUE_FOR_DUPLICATE); + /** Copy constructor. */ + CoinPackedVector(const CoinPackedVector &); + /** Copy constructor <em>from a PackedVectorBase</em>. */ + CoinPackedVector(const CoinPackedVectorBase & rhs); + /** Destructor */ + virtual ~CoinPackedVector (); + //@} + +private: + /**@name Private methods */ + //@{ + /// Copy internal date + void gutsOfSetVector(int size, + const int * inds, const double * elems, + bool testForDuplicateIndex, + const char * method); + /// + void gutsOfSetConstant(int size, + const int * inds, double value, + bool testForDuplicateIndex, + const char * method); + //@} + +private: + /**@name Private member data */ + //@{ + /// Vector indices + int * indices_; + ///Vector elements + double * elements_; + /// Size of indices and elements vectors + int nElements_; + /// original unsorted indices + int * origIndices_; + /// Amount of memory allocated for indices_, origIndices_, and elements_. + int capacity_; + //@} +}; + +//############################################################################# + +/**@name Arithmetic operators on packed vectors. + + <strong>NOTE</strong>: These methods operate on those positions where at + least one of the arguments has a value listed. At those positions the + appropriate operation is executed, Otherwise the result of the operation is + considered 0.<br> + <strong>NOTE 2</strong>: There are two kind of operators here. One is used + like "c = binaryOp(a, b)", the other is used like "binaryOp(c, a, b)", but + they are really the same. The first is much more natural to use, but it + involves the creation of a temporary object (the function *must* return an + object), while the second form puts the result directly into the argument + "c". Therefore, depending on the circumstances, the second form can be + significantly faster. + */ +//@{ +template <class BinaryFunction> void +binaryOp(CoinPackedVector& retVal, + const CoinPackedVectorBase& op1, double value, + BinaryFunction bf) +{ + retVal.clear(); + const int s = op1.getNumElements(); + if (s > 0) { + retVal.reserve(s); + const int * inds = op1.getIndices(); + const double * elems = op1.getElements(); + for (int i=0; i<s; ++i ) { + retVal.insert(inds[i], bf(value, elems[i])); + } + } +} + +template <class BinaryFunction> inline void +binaryOp(CoinPackedVector& retVal, + double value, const CoinPackedVectorBase& op2, + BinaryFunction bf) +{ + binaryOp(retVal, op2, value, bf); +} + +template <class BinaryFunction> void +binaryOp(CoinPackedVector& retVal, + const CoinPackedVectorBase& op1, const CoinPackedVectorBase& op2, + BinaryFunction bf) +{ + retVal.clear(); + const int s1 = op1.getNumElements(); + const int s2 = op2.getNumElements(); +/* + Replaced || with &&, in response to complaint from Sven deVries, who + rightly points out || is not appropriate for additive operations. && + should be ok as long as binaryOp is understood not to create something + from nothing. -- lh, 04.06.11 +*/ + if (s1 == 0 && s2 == 0) + return; + + retVal.reserve(s1+s2); + + const int * inds1 = op1.getIndices(); + const double * elems1 = op1.getElements(); + const int * inds2 = op2.getIndices(); + const double * elems2 = op2.getElements(); + + int i; + // loop once for each element in op1 + for ( i=0; i<s1; ++i ) { + const int index = inds1[i]; + const int pos2 = op2.findIndex(index); + const double val = bf(elems1[i], pos2 == -1 ? 0.0 : elems2[pos2]); + // if (val != 0.0) // *THINK* : should we put in only nonzeros? + retVal.insert(index, val); + } + // loop once for each element in operand2 + for ( i=0; i<s2; ++i ) { + const int index = inds2[i]; + // if index exists in op1, then element was processed in prior loop + if ( op1.isExistingIndex(index) ) + continue; + // Index does not exist in op1, so the element value must be zero + const double val = bf(0.0, elems2[i]); + // if (val != 0.0) // *THINK* : should we put in only nonzeros? + retVal.insert(index, val); + } +} + +//----------------------------------------------------------------------------- + +template <class BinaryFunction> CoinPackedVector +binaryOp(const CoinPackedVectorBase& op1, double value, + BinaryFunction bf) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, value, bf); + return retVal; +} + +template <class BinaryFunction> CoinPackedVector +binaryOp(double value, const CoinPackedVectorBase& op2, + BinaryFunction bf) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op2, value, bf); + return retVal; +} + +template <class BinaryFunction> CoinPackedVector +binaryOp(const CoinPackedVectorBase& op1, const CoinPackedVectorBase& op2, + BinaryFunction bf) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, op2, bf); + return retVal; +} + +//----------------------------------------------------------------------------- +/// Return the sum of two packed vectors +inline CoinPackedVector operator+(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, op2, std::plus<double>()); + return retVal; +} + +/// Return the difference of two packed vectors +inline CoinPackedVector operator-(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, op2, std::minus<double>()); + return retVal; +} + +/// Return the element-wise product of two packed vectors +inline CoinPackedVector operator*(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, op2, std::multiplies<double>()); + return retVal; +} + +/// Return the element-wise ratio of two packed vectors +inline CoinPackedVector operator/(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2) +{ + CoinPackedVector retVal; + retVal.setTestForDuplicateIndex(true); + binaryOp(retVal, op1, op2, std::divides<double>()); + return retVal; +} +//@} + +/// Returns the dot product of two CoinPackedVector objects whose elements are +/// doubles. Use this version if the vectors are *not* guaranteed to be sorted. +inline double sparseDotProduct(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2){ + int len, i; + double acc = 0.0; + CoinPackedVector retVal; + + CoinPackedVector retval = op1*op2; + len = retval.getNumElements(); + double * CParray = retval.getElements(); + + for(i = 0; i < len; i++){ + acc += CParray[i]; + } +return acc; +} + + +/// Returns the dot product of two sorted CoinPackedVector objects. +/// The vectors should be sorted in ascending order of indices. +inline double sortedSparseDotProduct(const CoinPackedVectorBase& op1, + const CoinPackedVectorBase& op2){ + int i, j, len1, len2; + double acc = 0.0; + + const double* v1val = op1.getElements(); + const double* v2val = op2.getElements(); + const int* v1ind = op1.getIndices(); + const int* v2ind = op2.getIndices(); + + len1 = op1.getNumElements(); + len2 = op2.getNumElements(); + + i = 0; + j = 0; + + while(i < len1 && j < len2){ + if(v1ind[i] == v2ind[j]){ + acc += v1val[i] * v2val[j]; + i++; + j++; + } + else if(v2ind[j] < v1ind[i]){ + j++; + } + else{ + i++; + } // end if-else-elseif + } // end while + return acc; + } + + +//----------------------------------------------------------------------------- + +/**@name Arithmetic operators on packed vector and a constant. <br> + These functions create a packed vector as a result. That packed vector will + have the same indices as <code>op1</code> and the specified operation is + done entry-wise with the given value. */ +//@{ +/// Return the sum of a packed vector and a constant +inline CoinPackedVector +operator+(const CoinPackedVectorBase& op1, double value) +{ + CoinPackedVector retVal(op1); + retVal += value; + return retVal; +} + +/// Return the difference of a packed vector and a constant +inline CoinPackedVector +operator-(const CoinPackedVectorBase& op1, double value) +{ + CoinPackedVector retVal(op1); + retVal -= value; + return retVal; +} + +/// Return the element-wise product of a packed vector and a constant +inline CoinPackedVector +operator*(const CoinPackedVectorBase& op1, double value) +{ + CoinPackedVector retVal(op1); + retVal *= value; + return retVal; +} + +/// Return the element-wise ratio of a packed vector and a constant +inline CoinPackedVector +operator/(const CoinPackedVectorBase& op1, double value) +{ + CoinPackedVector retVal(op1); + retVal /= value; + return retVal; +} + +//----------------------------------------------------------------------------- + +/// Return the sum of a constant and a packed vector +inline CoinPackedVector +operator+(double value, const CoinPackedVectorBase& op1) +{ + CoinPackedVector retVal(op1); + retVal += value; + return retVal; +} + +/// Return the difference of a constant and a packed vector +inline CoinPackedVector +operator-(double value, const CoinPackedVectorBase& op1) +{ + CoinPackedVector retVal(op1); + const int size = retVal.getNumElements(); + double* elems = retVal.getElements(); + for (int i = 0; i < size; ++i) { + elems[i] = value - elems[i]; + } + return retVal; +} + +/// Return the element-wise product of a constant and a packed vector +inline CoinPackedVector +operator*(double value, const CoinPackedVectorBase& op1) +{ + CoinPackedVector retVal(op1); + retVal *= value; + return retVal; +} + +/// Return the element-wise ratio of a a constant and packed vector +inline CoinPackedVector +operator/(double value, const CoinPackedVectorBase& op1) +{ + CoinPackedVector retVal(op1); + const int size = retVal.getNumElements(); + double* elems = retVal.getElements(); + for (int i = 0; i < size; ++i) { + elems[i] = value / elems[i]; + } + return retVal; +} +//@} + +//############################################################################# +/** A function that tests the methods in the CoinPackedVector class. The + only reason for it not to be a member method is that this way it doesn't + have to be compiled into the library. And that's a gain, because the + library should be compiled with optimization on, but this method should be + compiled with debugging. */ +void +CoinPackedVectorUnitTest(); + +#endif |