Mathc matrices/c16d

Application

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00a.c

/* ------------------------------------ */
/*  Save as :   c00a.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r,int c)
{
double **B   =         r_mR(   i_mR(r,c),9.);
double **B_T = transpose_mR(B, i_mR(c,r));

double **S   =                 i_mR(c,C1);
double **U   =                 i_mR(r,c);
double **V   =                 i_mR(c,c);

  clrscrn();  
  printf(" Copy/Past into the octave windows \n\n\n");
  p_Octave_mR(B,"B",P2);
  printf(" [U, S, V] =svd (B,10)\n\n\n");
  stop();

  clrscrn(); 
  svd_U_Rn_mR(B_T,U);    
  svd_V_Rn_mR(B_T,V); 
  svds_mR(B,S);
  
  printf(" U :");
  p_mR(U,S5,P5,C10);   
    
  printf(" S :");
  p_mR(S,S5,P5,C10);
   
  printf(" V:");
  p_mR(V,S5,P5,C10);  
    
  f_mR(B_T);
  f_mR(B);
  f_mR(S); 
  f_mR(U);
  f_mR(V); 
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));

int i;

do
{
  i = rp_I(R3)+R1;
  
  fun(i+R2,i);

} while(stop_w());

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

Cet version fonctionne quand il y a plus de lignes que de colonnes..

 svd_U_Rn_mR(B_T,U);    
 svd_V_Rn_mR(B_T,V); 

Exemple de sortie écran :

 Copy/Past into the octave windows 


 B=[
+1.00,+9.00,-5.00,-3.00;
-4.00,+3.00,+6.00,+4.00;
+3.00,-7.00,-2.00,-3.00;
-4.00,+4.00,+2.00,+1.00;
+9.00,-7.00,-1.00,+4.00;
-3.00,+6.00,-8.00,-1.00]

 [U, S, V] =svd (B,10)


 Press return to continue. 


 U :
-0.45413 -0.46173 -0.37278 -0.60330 
-0.17344 +0.60856 -0.28546 +0.12686 
+0.37316 -0.28014 +0.52367 -0.06669 
-0.27456 +0.26854 -0.03139 +0.08296 
+0.59584 -0.22024 -0.71016 +0.21210 
-0.44048 -0.46622 -0.00070 +0.75075 

 S :
+18.03134 
+13.07418 
+6.67939 
+4.16202 

 V:
-0.50697 -0.41257 +0.58743 -0.47717 
+0.83919 -0.04210 +0.45449 -0.29569 
-0.15875 +0.84192 +0.03642 -0.51444 
-0.11638 +0.34523 +0.66861 +0.64826 


 Press return to continue