TNT::Matrix< T > Class Template Reference

#include <tnt_matrix.h>

Public Types
typedef Subscript	size_type
typedef T	value_type
typedef T	element_type
typedef T *	pointer
typedef T *	iterator
typedef T &	reference
typedef const T *	const_iterator
typedef const T &	const_reference

Public Member Functions
Subscript	lbound () const
	operator T** ()
	operator const T ** () const
Subscript	size () const
	Matrix (const Matrix< T > &A)
	Matrix (Subscript M, Subscript N, const T &value=T(0))
	Matrix (Subscript M, Subscript N, const T *v)
	Matrix (Subscript M, Subscript N, const char *s)
Matrix< T > &	newsize (Subscript M, Subscript N)
Matrix< T > &	operator= (const Matrix< T > &B)
Matrix< T > &	operator= (const T &scalar)
Subscript	dim (Subscript d) const
Subscript	num_rows () const
Subscript	num_cols () const
T *	operator[] (Subscript i)
const T *	operator[] (Subscript i) const
reference	operator() (Subscript i)
const_reference	operator() (Subscript i) const
reference	operator() (Subscript i, Subscript j)
const_reference	operator() (Subscript i, Subscript j) const
Vector< T >	diag () const
Matrix< T >	upper_triangular () const
Matrix< T >	lower_triangular () const

Detailed Description

template<class T>
class TNT::Matrix< T >

Dense matrix class for basic linear algebra operations.

Ordering: row major.

Elements begin at (1,1) or [0][0].

Can be interfaced with C multidimentionsal arrays (e.g. double **)

copy-by-value semantics.

Optional range checking at compile time via TNT_BOUNDS_CHECK macro.

Constructor & Destructor Documentation

Matrix() [1/3]

template<class T >

TNT::Matrix< T >::Matrix ( Subscript M, Subscript N, const T & value = T(0) )

inline

Create a MxN matrix, with each element assigned to the value 0.

Parameters

M	the number of rows
N	the number of columns
value	(optional default value: 0 if not specified.

Matrix() [2/3]

template<class T >

TNT::Matrix< T >::Matrix ( Subscript M, Subscript N, const T * v )

inline

Create an MxN matrix, filling in values (row-major order) from the list (C array) provided.

Parameters

M	the number of rows
N	the number of columns
v	list (C array) of M*N values used to initialize matrix.

Matrix() [3/3]

template<class T >

TNT::Matrix< T >::Matrix ( Subscript M, Subscript N, const char * s )

inline

Create an MxN matrix, filling in values (row-major order) from a character string.

Parameters

M	the number of rows
N	the number of columns
s	string of M*N values used to initialize matrix.

Member Function Documentation

newsize()

template<class T >

Matrix< T > & TNT::Matrix< T >::newsize ( Subscript M, Subscript N )

inline

Change size of matrix to MxN, reallocating memory if necessary.

NOTE: This operations occurs in place, i.e. when resizing to a new matrix, original matrix elements are NOT retained. Instead, one must explicit create a new matrix of this size and manually copy the elements, e.g.

Matrix double B(M, N);

int     min_M = M < A.num_rows() ? M : A.num_rows();
int     min_N = N < A.num_cols() ? N : A.num_cols();
for (int i=1; i<=min_M; i++)
    for (int j=1; j<=min_N; j++)
        B(i,j) = A(i,j);

A.destroy();

Parameters

M	the number of rows of new size.
N	the number of columns of new size.

operator=()

template<class T >

Matrix< T > & TNT::Matrix< T >::operator= ( const Matrix< T > & B )

inline

Assign (copy) one matrix to another, e.g. A=B. The contents of A are lost, and a new copy of B is created.

Parameters

B	to matrix to be copied.

size()

template<class T >

Subscript TNT::Matrix< T >::size ( ) const

inline

Returns

the total number of items in matrix (M*N).

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

• tnt_matrix.h