n_les.c File Reference

#include <stdlib.h>
#include <grass/N_pde.h>
#include <grass/gmath.h>

Include dependency graph for n_les.c:

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Functions
N_les *	N_alloc_nquad_les (int cols, int rows, int type)
	Allocate memory for a (not) quadratic linear equation system which includes the Matrix A, vector x and vector b. More...
N_les *	N_alloc_nquad_les_Ax (int cols, int rows, int type)
	Allocate memory for a (not) quadratic linear equation system which includes the Matrix A and vector x. More...
N_les *	N_alloc_nquad_les_A (int cols, int rows, int type)
	Allocate memory for a (not) quadratic linear equation system which includes the Matrix A. More...
N_les *	N_alloc_nquad_les_Ax_b (int cols, int rows, int type)
	Allocate memory for a (not) quadratic linear equation system which includes the Matrix A, vector x and vector b. More...
N_les *	N_alloc_les (int rows, int type)
	Allocate memory for a quadratic linear equation system which includes the Matrix A, vector x and vector b. More...
N_les *	N_alloc_les_Ax (int rows, int type)
	Allocate memory for a quadratic linear equation system which includes the Matrix A and vector x. More...
N_les *	N_alloc_les_A (int rows, int type)
	Allocate memory for a quadratic linear equation system which includes the Matrix A. More...
N_les *	N_alloc_les_Ax_b (int rows, int type)
	Allocate memory for a quadratic linear equation system which includes the Matrix A, vector x and vector b. More...
N_les *	N_alloc_les_param (int cols, int rows, int type, int parts)
	Allocate memory for a quadratic or not quadratic linear equation system. More...
void	N_print_les (N_les *les)
	prints the linear equation system to stdout More...
void	N_free_les (N_les *les)
	Release the memory of the linear equation system. More...

Function Documentation

N_alloc_les()

N_les* N_alloc_les	(	int	rows,
		int	type
	)

Allocate memory for a quadratic linear equation system which includes the Matrix A, vector x and vector b.

This function calls N_alloc_les_param

Parameters

rows	int
type	int

Returns

N_les *

Definition at line 101 of file n_les.c.

N_alloc_les_A()

N_les* N_alloc_les_A	(	int	rows,
		int	type
	)

Allocate memory for a quadratic linear equation system which includes the Matrix A.

This function calls N_alloc_les_param

Parameters

rows	int
type	int

Returns

N_les *

Definition at line 133 of file n_les.c.

N_alloc_les_Ax()

N_les* N_alloc_les_Ax	(	int	rows,
		int	type
	)

Allocate memory for a quadratic linear equation system which includes the Matrix A and vector x.

This function calls N_alloc_les_param

Parameters

rows	int
type	int

Returns

N_les *

Definition at line 117 of file n_les.c.

N_alloc_les_Ax_b()

N_les* N_alloc_les_Ax_b	(	int	rows,
		int	type
	)

Allocate memory for a quadratic linear equation system which includes the Matrix A, vector x and vector b.

This function calls N_alloc_les_param

Parameters

rows	int
type	int

Returns

N_les *

Definition at line 149 of file n_les.c.

N_alloc_les_param()

N_les* N_alloc_les_param	(	int	cols,
		int	rows,
		int	type,
		int	parts
	)

Allocate memory for a quadratic or not quadratic linear equation system.

The type of the linear equation system must be N_NORMAL_LES for a regular quadratic matrix or N_SPARSE_LES for a sparse matrix

In case of N_NORMAL_LES

A quadratic matrix of size rows*rows*sizeof(double) will allocated

In case of N_SPARSE_LES

a vector of size row will be allocated, ready to hold additional allocated sparse vectors. each sparse vector may have a different size.

Parameter parts defines which parts of the les should be allocated. The number of columns and rows defines if the matrix is quadratic.

Parameters

cols	int
rows	int
type	int
parts	int – 2 = A, x and b; 1 = A and x; 0 = A allocated

Returns

N_les *

Definition at line 182 of file n_les.c.

N_alloc_nquad_les()

N_les* N_alloc_nquad_les	(	int	cols,
		int	rows,
		int	type
	)

Allocate memory for a (not) quadratic linear equation system which includes the Matrix A, vector x and vector b.

This function calls N_alloc_les_param

Parameters

cols	int
rows	int
type	int

Returns

N_les *

Definition at line 34 of file n_les.c.

N_alloc_nquad_les_A()

N_les* N_alloc_nquad_les_A	(	int	cols,
		int	rows,
		int	type
	)

Allocate memory for a (not) quadratic linear equation system which includes the Matrix A.

This function calls N_alloc_les_param

Parameters

cols	int
rows	int
type	int

Returns

N_les *

Definition at line 68 of file n_les.c.

N_alloc_nquad_les_Ax()

N_les* N_alloc_nquad_les_Ax	(	int	cols,
		int	rows,
		int	type
	)

Allocate memory for a (not) quadratic linear equation system which includes the Matrix A and vector x.

This function calls N_alloc_les_param

Parameters

cols	int
rows	int
type	int

Returns

N_les *

Definition at line 51 of file n_les.c.

N_alloc_nquad_les_Ax_b()

N_les* N_alloc_nquad_les_Ax_b	(	int	cols,
		int	rows,
		int	type
	)

Allocate memory for a (not) quadratic linear equation system which includes the Matrix A, vector x and vector b.

This function calls N_alloc_les_param

Parameters

cols	int
rows	int
type	int

Returns

N_les *

Definition at line 85 of file n_les.c.

N_free_les()

void N_free_les

(

N_les *

les

)

Release the memory of the linear equation system.

Parameters

les

N_les *

Returns

void

Definition at line 307 of file n_les.c.

References N_les::A, N_les::Asp, N_les::b, free(), G_debug(), G_free(), G_free_matrix(), G_math_free_spmatrix(), N_SPARSE_LES, N_les::rows, N_les::type, and N_les::x.

N_print_les()

void N_print_les

(

N_les *

les

)

prints the linear equation system to stdout

Format: A*x = b

Example

2 1 1 1 * 2 = 0.1
1 2 0 0 * 3 = 0.2
1 0 2 0 * 3 = 0.2
1 0 0 2 * 2 = 0.1

Parameters

les

N_les *

Returns

void

Definition at line 257 of file n_les.c.

References N_les::A, N_les::Asp, N_les::b, N_les::cols, G_math_spvector::index, N_SPARSE_LES, N_les::rows, N_les::type, G_math_spvector::values, and N_les::x.