Mathc matrices/c12fn2

Application

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00a.c

/* ------------------------------------ */
/*  Save as :   c00a.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define FACTOR_E        +1.E-5         
/* ------------------------------------ */
void fun(int r,int c)
{
double **B       = r_mR(i_mR(c,r),99999.);
double **Pinv    =      i_mR(r,c);           
double **PinvB   =      i_mR(r,r); 

  clrscrn();
  printf(" Copy/Past into the octave windows \n\n\n");
  p_Octave_mR(B,"B",P2);
  printf("pinv(B)\n\n\n");
  stop();

  clrscrn();  
  printf(" Pinv = V * invS_T * U_T ");
  Pinv_Rn_mR(B,Pinv,FACTOR_E); 
       pE_mR(Pinv,S12,P4,C10);    
  
  printf(" Ide = PseudoInverse * B ");   
  mul_mR(Pinv,B,PinvB); 
    p_mR(PinvB,S10,P6,C10);  
    
  f_mR(B);  
  f_mR(Pinv);
  f_mR(PinvB); 
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));

int i;

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

} 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 :

 B=[
-55182.00,-42065.00,+21863.00;
+93423.00,-15249.00,-97375.00;
-82113.00,-91931.00,+80957.00;
+60029.00,+77130.00,+46348.00;
+85963.00,-98747.00,+81371.00]

pinv(B)


 Press return to continue. 


 Pinv = V * invS_T * U_T 
 -1.7120e-06  +2.5425e-06  -2.0277e-06  +2.4399e-06  +4.1301e-06 
 -1.4199e-06  -2.9615e-06  -2.5084e-06  +4.4886e-06  -3.2235e-06 
 -2.5776e-07  -4.4579e-06  +1.5018e-06  +4.5382e-06  +2.9448e-06 

 Ide = PseudoInverse * B 
 +1.000000  -0.000000  +0.000000 
 +0.000000  +1.000000  +0.000000 
 -0.000000  +0.000000  +1.000000 


 Press   return to continue
 Press X return to stop