Ipopt::TripletToCSRConverter Class Reference
Class for converting symmetric matrices given in triplet format to matrices in compressed sparse row (CSR) format of the upper triangual part (or, equivalently, compressed sparse column (CSC) format for the lower triangular part). More...
#include <IpTripletToCSRConverter.hpp>
Classes | |
| class | TripletEntry |
| Class for one triplet position entry. More... | |
Public Member Functions | |
| Index | InitializeConverter (Index dim, Index nonzeros, const Index *airn, const Index *ajcn) |
| Initialize the converter, given the fixed structure of the matrix. | |
| void | ConvertValues (Index nonzeros_triplet, const Number *a_triplet, Index nonzeros_compressed, Number *a_compressed) |
| Convert the values of the nonzero elements. | |
Constructor/Destructor | |
| TripletToCSRConverter (Index offset) | |
| Destructor. | |
| virtual | ~TripletToCSRConverter () |
| Destructor. | |
Accessor methods | |
| const Index * | IA () const |
| Return the IA array for the condensed format. | |
| const Index * | JA () const |
| Return the JA array for the condensed format. | |
| const Index * | iPosFirst () const |
| Return the IA array for the condensed format. | |
Private Member Functions | |
Default Compiler Generated Methods | |
| TripletToCSRConverter () | |
| Default Constructor. | |
| TripletToCSRConverter (const TripletToCSRConverter &) | |
| Copy Constructor. | |
| void | operator= (const TripletToCSRConverter &) |
| Overloaded Equals Operator. | |
Private Attributes | |
| Index | offset_ |
| Offset for CSR numbering. | |
| Index * | ia_ |
| Array storing the values for IA in the condensed format. | |
| Index * | ja_ |
| Array storing the values for JA in the condensed format. | |
| Index | dim_ |
| Dimension of the matrix. | |
| Index | nonzeros_triplet_ |
| Number of nonzeros in the triplet format. | |
| Index | nonzeros_compressed_ |
| Number of nonzeros in the compressed format. | |
| bool | initialized_ |
| Flag indicating if initialize method had been called. | |
Arrays for cross-positions for the conversion of values. | |
| Index * | ipos_first_ |
| First elements assignement. | |
| Index * | ipos_double_triplet_ |
| Position of multiple elements in triplet matrix. | |
| Index * | ipos_double_compressed_ |
| Position of multiple elements in compressed matrix. | |
Detailed Description
Class for converting symmetric matrices given in triplet format to matrices in compressed sparse row (CSR) format of the upper triangual part (or, equivalently, compressed sparse column (CSC) format for the lower triangular part).
In the description for this class, we assume that we discuss the CSR format.
Definition at line 23 of file IpTripletToCSRConverter.hpp.
Constructor & Destructor Documentation
| Ipopt::TripletToCSRConverter::TripletToCSRConverter | ( | Index | offset | ) |
Destructor.
| virtual Ipopt::TripletToCSRConverter::~TripletToCSRConverter | ( | ) | [virtual] |
Destructor.
| Ipopt::TripletToCSRConverter::TripletToCSRConverter | ( | ) | [private] |
Default Constructor.
| Ipopt::TripletToCSRConverter::TripletToCSRConverter | ( | const TripletToCSRConverter & | ) | [private] |
Copy Constructor.
Member Function Documentation
| Index Ipopt::TripletToCSRConverter::InitializeConverter | ( | Index | dim, | |
| Index | nonzeros, | |||
| const Index * | airn, | |||
| const Index * | ajcn | |||
| ) |
Initialize the converter, given the fixed structure of the matrix.
There, ndim gives the number of rows and columns of the matrix, nonzeros give the number of nonzero elements, and airn and acjn give the positions of the nonzero elements. The return value is the number of nonzeros in the condensed matrix. (Since nonzero elements can be listed several times in the triplet format, it is possible that this value is different from the input value nonzeros.) This method must be called before the GetIA, GetJA, Convert Values methods are called.
| const Index* Ipopt::TripletToCSRConverter::IA | ( | ) | const [inline] |
Return the IA array for the condensed format.
Definition at line 146 of file IpTripletToCSRConverter.hpp.
| const Index* Ipopt::TripletToCSRConverter::JA | ( | ) | const [inline] |
Return the JA array for the condensed format.
Definition at line 153 of file IpTripletToCSRConverter.hpp.
| const Index* Ipopt::TripletToCSRConverter::iPosFirst | ( | ) | const [inline] |
Return the IA array for the condensed format.
Definition at line 158 of file IpTripletToCSRConverter.hpp.
| void Ipopt::TripletToCSRConverter::ConvertValues | ( | Index | nonzeros_triplet, | |
| const Number * | a_triplet, | |||
| Index | nonzeros_compressed, | |||
| Number * | a_compressed | |||
| ) |
Convert the values of the nonzero elements.
Given the values a_triplet for the triplet format, return the array of values for the condensed format in a_condensed. nonzeros_condensed is the length of the array a_condensed and must be identical to the return value of InitializeConverter.
| void Ipopt::TripletToCSRConverter::operator= | ( | const TripletToCSRConverter & | ) | [private] |
Overloaded Equals Operator.
Member Data Documentation
Index Ipopt::TripletToCSRConverter::offset_ [private] |
Offset for CSR numbering.
Definition at line 193 of file IpTripletToCSRConverter.hpp.
Index* Ipopt::TripletToCSRConverter::ia_ [private] |
Array storing the values for IA in the condensed format.
Definition at line 196 of file IpTripletToCSRConverter.hpp.
Index* Ipopt::TripletToCSRConverter::ja_ [private] |
Array storing the values for JA in the condensed format.
Definition at line 199 of file IpTripletToCSRConverter.hpp.
Index Ipopt::TripletToCSRConverter::dim_ [private] |
Dimension of the matrix.
Definition at line 202 of file IpTripletToCSRConverter.hpp.
Number of nonzeros in the triplet format.
Definition at line 205 of file IpTripletToCSRConverter.hpp.
Number of nonzeros in the compressed format.
Definition at line 208 of file IpTripletToCSRConverter.hpp.
bool Ipopt::TripletToCSRConverter::initialized_ [private] |
Flag indicating if initialize method had been called.
Definition at line 211 of file IpTripletToCSRConverter.hpp.
Index* Ipopt::TripletToCSRConverter::ipos_first_ [private] |
First elements assignement.
For i with 0 <= i <= nonzeros_compressed-1, the i-th element in the compressed format is obtained from copying the ipos_filter_[i]-th element from the triplet format.
Definition at line 219 of file IpTripletToCSRConverter.hpp.
Position of multiple elements in triplet matrix.
For i = 0,..,nonzeros_triplet_-nonzeros_compressed_, the ipos_double_triplet_[i]-th element in the triplet matrix has to be added to the ipos_double_compressed_[i]-th element in the compressed matrix.
Definition at line 225 of file IpTripletToCSRConverter.hpp.
Position of multiple elements in compressed matrix.
Definition at line 227 of file IpTripletToCSRConverter.hpp.
The documentation for this class was generated from the following file:
- /home/coin/svn-release/OptimizationSuite-1.1.0/Ipopt/src/Algorithm/LinearSolvers/IpTripletToCSRConverter.hpp
