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author | Harpreet | 2016-09-03 00:36:51 +0530 |
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committer | Harpreet | 2016-09-03 00:36:51 +0530 |
commit | a0d9443af147e949c1e6a01ac24749d12593ec5b (patch) | |
tree | 1a1955c5482ae608fd7f618b06f4ecc6a0d39a23 /thirdparty/linux/include/coin/CoinDenseVector.hpp | |
parent | 4b64cf486f5c999fd8167758cae27839f3b50848 (diff) | |
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cbcintlinprog added
Diffstat (limited to 'thirdparty/linux/include/coin/CoinDenseVector.hpp')
-rw-r--r-- | thirdparty/linux/include/coin/CoinDenseVector.hpp | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/thirdparty/linux/include/coin/CoinDenseVector.hpp b/thirdparty/linux/include/coin/CoinDenseVector.hpp new file mode 100644 index 0000000..77ff9af --- /dev/null +++ b/thirdparty/linux/include/coin/CoinDenseVector.hpp @@ -0,0 +1,383 @@ +/* $Id: CoinDenseVector.hpp 1372 2011-01-03 23:31:00Z lou $ */ +// Copyright (C) 2003, International Business Machines +// Corporation and others. All Rights Reserved. +// This code is licensed under the terms of the Eclipse Public License (EPL). + +#ifndef CoinDenseVector_H +#define CoinDenseVector_H + +#if defined(_MSC_VER) +// Turn off compiler warning about long names +# pragma warning(disable:4786) +#endif + +#include <cassert> +#include <cstdlib> +#include <cmath> +#include "CoinHelperFunctions.hpp" + +//############################################################################# +/** A function that tests the methods in the CoinDenseVector 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. */ + template <typename T> void + CoinDenseVectorUnitTest(T dummy); + +//############################################################################# +/** Dense Vector + +Stores a dense (or expanded) vector of floating point values. +Type of vector elements is controlled by templating. +(Some working quantities such as accumulated sums +are explicitly declared of type double). This allows the +components of the vector integer, single or double precision. + +Here is a sample usage: +@verbatim + const int ne = 4; + double el[ne] = { 10., 40., 1., 50. } + + // Create vector and set its value + CoinDenseVector<double> r(ne,el); + + // access each element + assert( r.getElements()[0]==10. ); + assert( r.getElements()[1]==40. ); + assert( r.getElements()[2]== 1. ); + assert( r.getElements()[3]==50. ); + + // Test for equality + CoinDenseVector<double> r1; + r1=r; + + // Add dense vectors. + // Similarly for subtraction, multiplication, + // and division. + CoinDenseVector<double> add = r + r1; + assert( add[0] == 10.+10. ); + assert( add[1] == 40.+40. ); + assert( add[2] == 1.+ 1. ); + assert( add[3] == 50.+50. ); + + assert( r.sum() == 10.+40.+1.+50. ); +@endverbatim +*/ +template <typename T> class CoinDenseVector { +private: + /**@name Private member data */ + //@{ + /// Size of element vector + int nElements_; + ///Vector elements + T * elements_; + //@} + +public: + /**@name Get methods. */ + //@{ + /// Get the size + inline int getNumElements() const { return nElements_; } + inline int size() const { return nElements_; } + /// Get element values + inline const T * getElements() const { return elements_; } + /// Get element values + inline T * getElements() { return elements_; } + //@} + + //------------------------------------------------------------------- + // Set indices and elements + //------------------------------------------------------------------- + /**@name Set methods */ + //@{ + /// Reset the vector (i.e. set all elemenets to zero) + void clear(); + /** Assignment operator */ + CoinDenseVector & operator=(const CoinDenseVector &); + /** Member of array operator */ + T & operator[](int index) const; + + /** Set vector size, and elements. + Size is the length of the elements vector. + The element vector is copied into this class instance's + member data. */ + void setVector(int size, const T * elems); + + + /** Elements set to have the same scalar value */ + void setConstant(int size, T elems); + + + /** Set an existing element in the dense vector + The first argument is the "index" into the elements() array + */ + void setElement(int index, T element); + /** Resize the dense vector to be the first newSize elements. + If length is decreased, vector is truncated. If increased + new entries, set to new default element */ + void resize(int newSize, T fill=T()); + + /** Append a dense vector to this dense vector */ + void append(const CoinDenseVector &); + //@} + + /**@name norms, sum and scale */ + //@{ + /// 1-norm of vector + inline T oneNorm() const { + T norm = 0; + for (int i=0; i<nElements_; i++) + norm += CoinAbs(elements_[i]); + return norm; + } + /// 2-norm of vector + inline double twoNorm() const { + double norm = 0.; + for (int i=0; i<nElements_; i++) + norm += elements_[i] * elements_[i]; + // std namespace removed because it was causing a compile + // problem with Microsoft Visual C++ + return /*std::*/sqrt(norm); + } + /// infinity-norm of vector + inline T infNorm() const { + T norm = 0; + for (int i=0; i<nElements_; i++) + norm = CoinMax(norm, CoinAbs(elements_[i])); + return norm; + } + /// sum of vector elements + inline T sum() const { + T sume = 0; + for (int i=0; i<nElements_; i++) + sume += elements_[i]; + return sume; + } + /// scale vector elements + inline void scale(T factor) { + for (int i=0; i<nElements_; i++) + elements_[i] *= factor; + return; + } + //@} + + /**@name Arithmetic operators. */ + //@{ + /// add <code>value</code> to every entry + void operator+=(T value); + /// subtract <code>value</code> from every entry + void operator-=(T value); + /// multiply every entry by <code>value</code> + void operator*=(T value); + /// divide every entry by <code>value</code> + void operator/=(T value); + //@} + + /**@name Constructors and destructors */ + //@{ + /** Default constructor */ + CoinDenseVector(); + /** Alternate Constructors - set elements to vector of Ts */ + CoinDenseVector(int size, const T * elems); + /** Alternate Constructors - set elements to same scalar value */ + CoinDenseVector(int size, T element=T()); + /** Copy constructors */ + CoinDenseVector(const CoinDenseVector &); + + /** Destructor */ + ~CoinDenseVector (); + //@} + +private: + /**@name Private methods */ + //@{ + /// Copy internal data + void gutsOfSetVector(int size, const T * elems); + /// Set all elements to a given value + void gutsOfSetConstant(int size, T value); + //@} +}; + +//############################################################################# + +/**@name Arithmetic operators on dense vectors. + + <strong>NOTE</strong>: Because these methods return an object (they can't + return a reference, though they could return a pointer...) they are + <em>very</em> inefficient... + */ +//@{ +/// Return the sum of two dense vectors +template <typename T> inline +CoinDenseVector<T> operator+(const CoinDenseVector<T>& op1, + const CoinDenseVector<T>& op2){ + assert(op1.size() == op2.size()); + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + const T *elements2 = op2.getElements(); + T *elements3 = op3.getElements(); + for(int i=0; i<size; i++) + elements3[i] = elements1[i] + elements2[i]; + return op3; +} + +/// Return the difference of two dense vectors +template <typename T> inline +CoinDenseVector<T> operator-(const CoinDenseVector<T>& op1, + const CoinDenseVector<T>& op2){ + assert(op1.size() == op2.size()); + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + const T *elements2 = op2.getElements(); + T *elements3 = op3.getElements(); + for(int i=0; i<size; i++) + elements3[i] = elements1[i] - elements2[i]; + return op3; +} + + +/// Return the element-wise product of two dense vectors +template <typename T> inline +CoinDenseVector<T> operator*(const CoinDenseVector<T>& op1, + const CoinDenseVector<T>& op2){ + assert(op1.size() == op2.size()); + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + const T *elements2 = op2.getElements(); + T *elements3 = op3.getElements(); + for(int i=0; i<size; i++) + elements3[i] = elements1[i] * elements2[i]; + return op3; +} + +/// Return the element-wise ratio of two dense vectors +template <typename T> inline +CoinDenseVector<T> operator/(const CoinDenseVector<T>& op1, + const CoinDenseVector<T>& op2){ + assert(op1.size() == op2.size()); + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + const T *elements2 = op2.getElements(); + T *elements3 = op3.getElements(); + for(int i=0; i<size; i++) + elements3[i] = elements1[i] / elements2[i]; + return op3; +} +//@} + +/**@name Arithmetic operators on dense vector and a constant. + These functions create a dense vector as a result. That dense 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 dense vector and a constant +template <typename T> inline +CoinDenseVector<T> operator+(const CoinDenseVector<T>& op1, T value){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] + dvalue; + return op3; +} + +/// Return the difference of a dense vector and a constant +template <typename T> inline +CoinDenseVector<T> operator-(const CoinDenseVector<T>& op1, T value){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] - dvalue; + return op3; +} + +/// Return the element-wise product of a dense vector and a constant +template <typename T> inline +CoinDenseVector<T> operator*(const CoinDenseVector<T>& op1, T value){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] * dvalue; + return op3; +} + +/// Return the element-wise ratio of a dense vector and a constant +template <typename T> inline +CoinDenseVector<T> operator/(const CoinDenseVector<T>& op1, T value){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] / dvalue; + return op3; +} + +/// Return the sum of a constant and a dense vector +template <typename T> inline +CoinDenseVector<T> operator+(T value, const CoinDenseVector<T>& op1){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] + dvalue; + return op3; +} + +/// Return the difference of a constant and a dense vector +template <typename T> inline +CoinDenseVector<T> operator-(T value, const CoinDenseVector<T>& op1){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = dvalue - elements1[i]; + return op3; +} + +/// Return the element-wise product of a constant and a dense vector +template <typename T> inline +CoinDenseVector<T> operator*(T value, const CoinDenseVector<T>& op1){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = elements1[i] * dvalue; + return op3; +} + +/// Return the element-wise ratio of a a constant and dense vector +template <typename T> inline +CoinDenseVector<T> operator/(T value, const CoinDenseVector<T>& op1){ + int size = op1.size(); + CoinDenseVector<T> op3(size); + const T *elements1 = op1.getElements(); + T *elements3 = op3.getElements(); + double dvalue = value; + for(int i=0; i<size; i++) + elements3[i] = dvalue / elements1[i]; + return op3; +} +//@} + +#endif |