Mathc matrices/c12b18

Application

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	c01a.c

/* ------------------------------------ */
/*  Save as :   c01a.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define   RA R5
#define   CA C3
/* ------------------------------------ */
#define FACTOR_E        +1.E-0         
/* ------------------------------------ */
void fun(void)
{
double **A    =  r_mR(i_mR(RA,CA),9);
double **Pinv =       i_mR(CA,RA); 
double **Ide  =       i_mR(CA,CA);         

  clrscrn();
  printf(" A :");
  p_mR(A,S7,P2,C7);
  
  printf(" Pinv = V * invS_T * U_T ");
  Pinv_Rn_mR(A,Pinv,FACTOR_E);  
  pE_mR(Pinv,S12,P4,C10); 
  
  printf(" Ide = Pinv * A ");   
  mul_mR(Pinv,A,Ide); 
  p_mR(Ide,S7,P2,C10); 
      
  f_mR(A);
  f_mR(Pinv);
  f_mR(Ide); 
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));
do
{
  fun();


} while(stop_w());

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

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

Pinv_Rn_mR(A,Pinv,FACTOR_E); 



Exemple de sortie écran :

 ------------------------------------ 

 A :
  +7.00   +9.00   -1.00 
  -6.00   -3.00   -2.00 
  -9.00   -1.00   -6.00 
  -5.00   +3.00   -4.00 
  -8.00   -4.00   -2.00 

 Pinv = V * invS_T * U_T 
 +2.7372e-02  -8.5701e-03  +2.5214e-01  -2.7874e-01  -2.0407e-01 
 +5.1836e-02  -1.8127e-02  -2.4547e-01  +2.8619e-01  +1.5624e-01 
 -5.8173e-02  -1.9737e-02  -4.9507e-01  +3.7321e-01  +2.8759e-01 

 Ide = Pinv * A 
  +1.00   +0.00   -0.00 
  +0.00   +1.00   -0.00 
  -0.00   +0.00   +1.00 


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