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# TNT::Sparse_Matrix_CompRow Class Template Reference

`#include <tnt_sparse_matrix_csr.h>`

List of all members.

## Public Methods

| Sparse_Matrix_CompRow (const Sparse_Matrix_CompRow &S)
| Sparse_Matrix_CompRow (int M, int N, int nz, const T *val, const int *r, const int *c)
const T& | val (int i) const
const int& | row_ptr (int i) const
const int& | col_ind (int i) const
int | dim1 () const
int | dim2 () const
int | NumNonzeros () const
Sparse_Matrix_CompRow& | operator= (const Sparse_Matrix_CompRow &R)

## Detailed Description

### template<class T> class TNT::Sparse_Matrix_CompRow

Read-only view of a sparse matrix in compressed-row storage format. Neither array elements (nonzeros) nor sparsity structure can be modified. If modifications are required, create a new view.

Index values begin at 0.

Storage requirements: An (m x n) matrix with nz nonzeros requires no more than ((T+I)*nz + M*I) bytes, where T is the size of data elements and I is the size of integers.

## Constructor & Destructor Documentation

template<class T>
TNT::Sparse_Matrix_CompRow<T>::Sparse_Matrix_CompRow<T> ( | const Sparse_Matrix_CompRow<T> & S )

template<class T>
TNT::Sparse_Matrix_CompRow< T >::Sparse_Matrix_CompRow<T> ( | int M,
| int N,
| int nz,
| const T * val,
| const int * r,
| const int * c )

Construct a read-only view of existing sparse matrix in compressed-row storage format.

Parameters:

  M | the number of rows of sparse matrix
  N | the number of columns of sparse matrix
  nz | the number of nonzeros
  val | a contiguous list of nonzero values
  r | row-pointers: r[i] denotes the begining position of row i (i.e. the ith row begins at val[row[i]]).
  c | column-indices: c[i] denotes the column location of val[i]

## Member Function Documentation

template<class T>
int TNT::Sparse_Matrix_CompRow<T>::NumNonzeros ( | ) const

template<class T>
const int & TNT::Sparse_Matrix_CompRow<T>::col_ind ( | int i ) const`[inline]`

template<class T>
int TNT::Sparse_Matrix_CompRow<T>::dim1 ( | ) const`[inline]`

template<class T>
int TNT::Sparse_Matrix_CompRow<T>::dim2 ( | ) const`[inline]`

template<class T>
Sparse_Matrix_CompRow<T>& TNT::Sparse_Matrix_CompRow<T>::operator= ( | const Sparse_Matrix_CompRow<T> & R )

template<class T>
const int & TNT::Sparse_Matrix_CompRow<T>::row_ptr ( | int i ) const`[inline]`

template<class T>
const T & TNT::Sparse_Matrix_CompRow<T>::val ( | int i ) const`[inline]`

The documentation for this class was generated from the following file:

- tnt_sparse_matrix_csr.h