GF2Mat Class Reference

#include <gnuradio/fec/gf2mat.h>

Public Member Functions
	GF2Mat ()
	Default constructor. More...
	GF2Mat (int m, int n)
	Construct an M x N matrix with all 0 entries. More...
	GF2Mat (alist _list)
	Loads the matrix from alist _list. More...
	GF2Mat (std::vector< std::vector< char > > X)
	Initializes the class from a 2-D vector X. More...
int	get_M ()
	Returns the variable M. More...
int	get_N ()
	Returns the variable N. More...
void	set_element (int i, int j, char val)
	Set the element at (i, j) coordinate to val. More...
char	get_element (int i, int j)
	Returns the element at coordinate (i, j) More...
GF2Vec	get_row (int i)
	Returns the ith row. More...
GF2Vec	get_col (int i)
	Returns the ith column. More...
GF2Vec	operator[] (int i)
	Returns the ith row. More...
void	print_matrix ()
	Prints the matrix H. More...
void	set_col (int i, GF2Vec vec)
	Sets the ith column with the given vector. More...
void	set_row (int i, GF2Vec vec)
	Sets the ith row with the given vector. More...
void	swap_cols (int i, int j)
	Swaps columns i and j. More...
void	add_cols (int i, int j)
	Adds column j to i and replace i with the sum. More...
void	add_rows (int i, int j)
	Add row j to i and replace j with the sum. More...
std::vector< std::vector< char > >	get_H ()
	Returns the variable H. More...
GF2Mat	get_G (std::vector< int > &p, int &rank)
	Obtains an equivalent representation of H for encoding. More...

Constructor & Destructor Documentation

GF2Mat::GF2Mat ( )

inline

Default constructor.

GF2Mat::GF2Mat	(	int	m,
		int	n
	)

Construct an M x N matrix with all 0 entries.

GF2Mat::GF2Mat

(

alist

_list

)

Loads the matrix from alist _list.

GF2Mat::GF2Mat

(

std::vector< std::vector< char > >

X

)

Initializes the class from a 2-D vector X.

Member Function Documentation

void GF2Mat::add_cols	(	int	i,
		int	j
	)

Adds column j to i and replace i with the sum.

void GF2Mat::add_rows	(	int	i,
		int	j
	)

Add row j to i and replace j with the sum.

GF2Vec GF2Mat::get_col

(

int

i

)

Returns the ith column.

char GF2Mat::get_element	(	int	i,
		int	j
	)

Returns the element at coordinate (i, j)

GF2Mat GF2Mat::get_G	(	std::vector< int > &	p,
		int &	rank
	)

Obtains an equivalent representation of H for encoding.

For encoding a G matrix in the form [I P] obtained from the parity matrix H, by (a) Column permutations, (b) Row additions and (c) Row permutations. Details of encoding is given in section A.1 of the reference:

• "Modern Coding Theory", T Richardson and R Urbanke.

Parameters

p	The column permutation during this operation.
rank	The rank of the matrix.

std::vector<std::vector<char> > GF2Mat::get_H

(

)

Returns the variable H.

int GF2Mat::get_M

(

)

Returns the variable M.

int GF2Mat::get_N

(

)

Returns the variable N.

GF2Vec GF2Mat::get_row

(

int

i

)

Returns the ith row.

GF2Vec GF2Mat::operator[]

(

int

i

)

Returns the ith row.

void GF2Mat::print_matrix

(

)

Prints the matrix H.

void GF2Mat::set_col	(	int	i,
		GF2Vec	vec
	)

Sets the ith column with the given vector.

void GF2Mat::set_element	(	int	i,
		int	j,
		char	val
	)

Set the element at (i, j) coordinate to val.

void GF2Mat::set_row	(	int	i,
		GF2Vec	vec
	)

Sets the ith row with the given vector.

void GF2Mat::swap_cols	(	int	i,
		int	j
	)

Swaps columns i and j.

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

• gf2mat.h