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Functions for matrix-manipulation (Changing single Elements, columms etc.)


Functions

void meml_matrix_ceil (ME_MATRIX *M)
ME_MATRIX * meml_matrix_convert (const M_TYPE type, const ME_MATRIX *A)
 B := A.
void meml_matrix_erase (ME_MATRIX *M, const MEML_FLOAT border)
MEML_FLOAT meml_matrix_element_get (const ME_MATRIX *A, const MEML_INT x, const MEML_INT y)
 alpha := A(x,y)
MEML_FLOAT meml_matrix_element_get_f (const ME_MATRIX *A, const MEML_INT x, const MEML_INT y)
void meml_matrix_element_set (ME_MATRIX *A, const MEML_INT x, const MEML_INT y, MEML_FLOAT value)
 A(x,y) := value.
void meml_matrix_element_set_f (ME_MATRIX *A, const MEML_INT x, const MEML_INT y, const MEML_FLOAT value)
void meml_matrix_element_add (ME_MATRIX *A, const MEML_INT x, const MEML_INT y, const MEML_FLOAT value)
 A(x,y) := A(x,y) + value.
void meml_matrix_element_add_f (ME_MATRIX *A, const MEML_INT x, const MEML_INT y, const MEML_FLOAT value)
 A(x,y) := A(x,y) + value.
void meml_matrix_element_mul (ME_MATRIX *A, const MEML_INT x, const MEML_INT y, const MEML_FLOAT alpha)
 A(x,y) := A(x,y) * alpha.
void meml_matrix_element_mul_f (ME_MATRIX *A, MEML_INT x, MEML_INT y, MEML_FLOAT alpha)
 A(x,y) := A(x,y) * alpha.
void meml_matrix_set_row_2_unit_vector (ME_MATRIX *M, const MEML_INT row)
void meml_matrix_set_col_2_unit_vector (ME_MATRIX *M, const MEML_INT col)
VECTOR * meml_matrix_row_get (const ME_MATRIX *M, const MEML_INT row)
 $ v := M(row , :) $
void meml_matrix_row_get_f (const ME_MATRIX *M, VECTOR *v, const MEML_INT row)
 $ v := M(row , :) $
VECTOR * meml_matrix_col_get (const ME_MATRIX *M, const MEML_INT col)
 $ v := M(: , col) $
void meml_matrix_col_get_f (const ME_MATRIX *M, VECTOR *v, const MEML_INT col)
 $ v := M(: , col) $
void meml_matrix_resize (ME_MATRIX **M, MEML_INT row, MEML_INT col)
ME_MATRIX * meml_matrix_copy (const ME_MATRIX *A)
int meml_matrix_part_copy_f (const ME_MATRIX *M, const MEML_INT xm1, const MEML_INT ym1, const MEML_INT xm2, const MEML_INT ym2, ME_MATRIX *D, const MEML_INT xd1, const MEML_INT yd1)
 $ D(xd1 : xd1+(xm2-xm1),yd1 : yd1+(ym2-ym1) ) := M(xm1:xm2 , ym1:ym2) $
int meml_matrix_col_set (ME_MATRIX *M, const VECTOR *v, const MEML_INT col)
 $ M(:,col) := v $
int meml_matrix_row_set (ME_MATRIX *M, const VECTOR *v, const MEML_INT row)
 $ M(row,;) := v $
void meml_matrix_clear (ME_MATRIX *M)
 $ M :=0 $

Function Documentation

void meml_matrix_ceil (  ME_MATRIX *  M  ) 
 

Round towards plus infinity

Todo:
'quick and dirty' . Not optimized for the different matrix

meml_matrix_ceil rounds the elements of X to the nearest integers towards infinity

void meml_matrix_clear (  ME_MATRIX *  M  ) 
 

$ M :=0 $

Todo:
'quick and dirty' . Not optimized for the different matrix types.

VECTOR* meml_matrix_col_get (  const ME_MATRIX *  M,
const MEML_INT  col
) 
 

$ v := M(: , col) $

void meml_matrix_col_get_f (  const ME_MATRIX *  M,
VECTOR *  v,
const MEML_INT  col
) 
 

$ v := M(: , col) $

int meml_matrix_col_set (  ME_MATRIX *  M,
const VECTOR *  v,
const MEML_INT  col
) 
 

$ M(:,col) := v $

ME_MATRIX* meml_matrix_convert (  const M_TYPE  type,
const ME_MATRIX *  A
) 
 

B := A.

ME_MATRIX* meml_matrix_copy (  const ME_MATRIX *  A  ) 
 

M:=A;

void meml_matrix_element_add (  ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y,
const MEML_FLOAT  value
) 
 

A(x,y) := A(x,y) + value.

Adds value to A(x,y)

Parameters:
A 
x row
y col
value 

void meml_matrix_element_add_f (  ME_MATRIX *  A,
MEML_INT  x,
MEML_INT  y,
MEML_FLOAT  value
) 
 

A(x,y) := A(x,y) + value.

Adds value to A(x,y)

Parameters:
A 
x row
y col
value 

MEML_FLOAT meml_matrix_element_get (  const ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y
) 
 

alpha := A(x,y)

Returns the value of the matix A at the positon (x,y)

Parameters:
A 
x row
y col

MEML_FLOAT meml_matrix_element_get_f (  const ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y
) 
 

Todo:
'quick and dirty' . Just a wapper over the normal version

void meml_matrix_element_mul (  ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y,
const MEML_FLOAT  alpha
) 
 

A(x,y) := A(x,y) * alpha.

Adds value to A(x,y)

Parameters:
A 
x row
y col
alpha 

void meml_matrix_element_mul_f (  ME_MATRIX *  A,
MEML_INT  x,
MEML_INT  y,
MEML_FLOAT  alpha
) 
 

A(x,y) := A(x,y) * alpha.

Adds value to A(x,y)

Parameters:
A 
x row
y col
alpha 

void meml_matrix_element_set (  ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y,
const MEML_FLOAT  value
) 
 

A(x,y) := value.

Parameters:
A ME_MATRIX
x row
y col
value 

void meml_matrix_element_set_f (  ME_MATRIX *  A,
const MEML_INT  x,
const MEML_INT  y,
const MEML_FLOAT  value
) 
 

Todo:
'quick and dirty' . Just a wapper over the normal version

void meml_matrix_erase (  ME_MATRIX *  M,
const MEML_FLOAT  border
) 
 

Todo:
'quick and dirty' . Not optimized for the different matrix types.
if M[i][j] < border then M[i][j]=0

int meml_matrix_part_copy_f (  const ME_MATRIX *  M,
const MEML_INT  xm1,
const MEML_INT  ym1,
const MEML_INT  xm2,
const MEML_INT  ym2,
ME_MATRIX *  D,
const MEML_INT  xd1,
const MEML_INT  yd1
) 
 

$ D(xd1 : xd1+(xm2-xm1),yd1 : yd1+(ym2-ym1) ) := M(xm1:xm2 , ym1:ym2) $

void meml_matrix_resize (  ME_MATRIX **  M,
const MEML_INT  row,
const MEML_INT  col
) 
 

M:=M[0:row-1,0:col-1]

VECTOR* meml_matrix_row_get (  const ME_MATRIX *  M,
const MEML_INT  row
) 
 

$ v := M(row , :) $

void meml_matrix_row_get_f (  const ME_MATRIX *  M,
VECTOR *  v,
const MEML_INT  row
) 
 

$ v := M(row , :) $

int meml_matrix_row_set (  ME_MATRIX *  M,
const VECTOR *  v,
const MEML_INT  row
) 
 

$ M(row,;) := v $

void meml_matrix_set_col_2_unit_vector (  ME_MATRIX *  M,
const MEML_INT  col
) 
 

Changes the collum 'col' to the col'th unit vector

void meml_matrix_set_row_2_unit_vector (  ME_MATRIX *  M,
const MEML_INT  row
) 
 

Changes the row 'row' to the row'th unit vector

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