Mathc matrices/00c

Matrice de Hankel

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00a.c

/* ------------------------------------ */
/*  Save as :  c00a.c                   */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **U   = r_mR(          i_mR(R1, r),9);
double **V   = r_mR(          i_mR(r ,C1),9);	
double **A   = rHankel_mR(U,V,i_mR(r , r)  );

double **EigsVector=          i_mR(r,r);
double **EigsValue =          i_mR(r,C1);

  clrscrn();
  printf(" Copy/Past into the octave windows \n\n");
  p_Octave_mR(A,"a",P0);
  printf(" [V, E] = eigs (a,%d) \n\n",r);
  stop();

  clrscrn();   
  eigs_V_mR(A,EigsVector); 
  printf(" EigsVector:");
  p_mR(EigsVector,S5,P6,C7);
   
  eigs_mR(A,EigsValue);
  printf(" EigsValue :");
  p_mR(EigsValue,S13,P6,C1);   

  f_mR(U);
  f_mR(V);   
  f_mR(A);
  
  f_mR(EigsVector);
  f_mR(EigsValue);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));

do
{
 fun(rp_I(R5)+R2);

} while(stop_w());

  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */

Matrice de Hankel.

Exemple de sortie écran :

 Copy/Past into the octave windows 

 a=[
-1,+1,-3,-3;
+1,-3,-3,+8;
-3,-3,+8,-7;
-3,+8,-7,-7]

 [V, E] = eigs (a,4) 

 Press return to continue. 


 EigsVector:
+0.254363 -0.112817 +0.596520 +0.752819 
-0.505074 -0.363671 +0.665847 -0.411450 
+0.211066 +0.827132 +0.432582 -0.290131 
+0.797277 -0.413361 +0.116981 -0.424024 

 EigsValue :
   -14.878233 
   +13.226483 
    -2.647628 
    +1.299379 


 Press   return to continue
 Press X return to stop