mth::Tensor< T > Class Template Reference

run-time (dynamic) tensor More...

Inheritance diagram for mth::Tensor< T >:

Public Member Functions
	Tensor ()
	default constructor
	Tensor (unsigned d)
	construct with dimension d
	Tensor (Tensor< T > const &b)
	copy constructor
	Tensor (Matrix< T > const &b)
	copy from a matrix
Tensor< T > &	operator= (Tensor< T > const &b)
	assignment operator
Tensor< T >	operator= (Matrix< T > const &b)
	assignent to a matrix
Tensor< T >	operator+ (Tensor< T > const &b)
	add a tensor to a tensor
Tensor< T >	operator- (Tensor< T > const &b)
	subtract a tensor from a tensor
Tensor< T >	operator* (Tensor< T > const &b)
	multiply a tensor by a tensor
Tensor< T >	operator* (T const &s)
	multiply a tensor by a scalar
Tensor< T >	operator/ (T const &s)
	divide a tensor by a scalar
void	resize (unsigned d)
	resize this tensor to dimension d More...
void	resize (unsigned m, unsigned n)
	resize this tensor More...
unsigned	dim () const
	get the dimension of this tensor
Public Member Functions inherited from mth::Matrix< T, M, N >
	Matrix ()
	default constructor
	Matrix (unsigned m, unsigned n)
	construct with m by n elements More...
unsigned	rows () const
	get the number of rows
unsigned	cols () const
	get the number of columns
T &	operator() (unsigned i, unsigned j)
	mutable index operator More...
T const &	operator() (unsigned i, unsigned j) const
	immutable index operator More...
Matrix< T, M, N >	operator+ (Matrix< T, M, N > const &b) const
	add two matrices
Matrix< T, M, N >	operator- (Matrix< T, M, N > const &b) const
	subtract two matrices
Matrix< T, M, N >	operator* (T const &s) const
	multiply by a scalar
Matrix< T, M, N >	operator/ (T const &s) const
	divide by a scalar
Vector< T, M >	operator* (Vector< T, N > const &b) const
	multiply a matrix by a vector
template<unsigned O>
Matrix< T, M, O >	operator* (Matrix< T, N, O > const &b) const
	multiply two matrices More...
void	zero ()
	zero a matrix
Public Member Functions inherited from can::Array< Vector< T, 0 >, 0 >
	Array ()
	default constructor - necessary
	Array (Array< Vector< T, 0 >, N > const &other)
	copy constructor
	~Array ()
	elems is destroyed automatically
Array< Vector< T, 0 >, N > &	operator= (Array< Vector< T, 0 >, N > const &other)
	assignment operator
Vector< T, 0 > &	operator[] (unsigned i)
	mutable index operator
Vector< T, 0 > const &	operator[] (unsigned i) const
	immutable index operator
unsigned	size () const
	get the size of this array

Detailed Description

template<class T>
class mth::Tensor< T >

run-time (dynamic) tensor

This is a silly wrapper around mth::Matrix<T> for 2x2 and 3x3 matrices that provides operator overloads like tensor * tensor that the dynamic matrix mth::Matrix<T> does not provide for performance and user safety reasons

Definition at line 28 of file mthTensor.h.

Member Function Documentation

resize() [1/2]

template<class T >

void mth::Tensor< T >::resize ( unsigned  d )

inline

resize this tensor to dimension d

d must be 2 or 3

Definition at line 106 of file mthTensor.h.

    {
      PCU_ALWAYS_ASSERT((d==2) || (d==3));
      this->columns = d;
      this->elems.resize(d*d);
    }

resize() [2/2]

template<class T >

void mth::Tensor< T >::resize ( unsigned  m, unsigned  n  )

inline

resize this tensor

this method overrides Matrix.resize(m,n) to ensure that a Tensor is not improperly resized

Definition at line 115 of file mthTensor.h.

    {
      PCU_ALWAYS_ASSERT(m==n);
      PCU_ALWAYS_ASSERT((m==2) || (m==3));
      this->columns = m;
      this->elems.resize(m*m);
    }

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

• mth/mthTensor.h