Mathc matrices/c15c

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)
{
double **A  = i_mR(r,r);
double **b  = i_mR(r,r);
double **Ab = i_Abr_Ac_bc_mR(   r,  r,  r);
/*            i_Abr_Ac_bc_mR(R_Ab,C_A,C_b));  */
double **invA = i_mR(r,r);

 do
  {
   r_mR(A,999.);
   printf(".");
  }while(!det_R(A));

  clrscrn();
  printf(" A :");
  p_mR(A,S8,P0,C4);

  printf("   b : ID :");
  eye_mR(b);
  p_mR(b,S8,P0,C4);
  stop();
  
  clrscrn();  
  printf(" Ab :");
  c_A_b_Ab_mR(A,b,Ab);
  p_mR(Ab,S8,P0,C4);
  printf("  gj_TP_mR(Ab) :");  
  gj_TP_mR(Ab);
  pE_mR(Ab,S14,P4,C4);
  stop();
  
  clrscrn(); 
  printf(" Copy/Past into the octave window.\n\n");
  p_Octave_mR(A,"A",P0);
  printf("format short e\n");
  printf(" inv(A)\n\n");

  printf(" invA :                      c_Inv_A_mR(Ab,invA);");  
  c_Inv_A_mR(Ab,invA);
  pE_mR(invA,S14,P4,C4);
  
  f_mR(invA);
  f_mR(Ab);
  f_mR(b);
  f_mR(A);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));
do
{
  fun(R4);
} while(stop_w());

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

Utiliser la fonction gj_TP_mR(Ab); pour inverser une matrice.

Exemple de sortie écran :

 ------------------------------------
 A :
    -828       +6     +321     +504 
    +555     +300     +507     -830 
    +303     +959     +719     -612 
    -458     -594      -64      -25 

   b : ID :
      +1       +0       +0       +0 
      +0       +1       +0       +0 
      +0       +0       +1       +0 
      +0       +0       +0       +1 

 Press return to continue. 


 ------------------------------------
 Ab :
    -828       +6     +321     +504 
    +555     +300     +507     -830 
    +303     +959     +719     -612 
    -458     -594      -64      -25 

      +1       +0       +0       +0 
      +0       +1       +0       +0 
      +0       +0       +1       +0 
      +0       +0       +0       +1 

  gj_TP_mR(Ab) :
   +1.0000e+00    +0.0000e+00    +0.0000e+00    +0.0000e+00 
   +0.0000e+00    +1.0000e+00    +0.0000e+00    +0.0000e+00 
   +0.0000e+00    +0.0000e+00    +1.0000e+00    +0.0000e+00 
   +0.0000e+00    +0.0000e+00    +0.0000e+00    +1.0000e+00 

   +9.6778e-04    +2.4025e-03    -2.3558e-03    -2.5803e-03 
   -1.1140e-03    -2.3055e-03    +2.1822e-03    +6.6390e-04 
   +2.6791e-03    +3.5312e-03    -2.4923e-03    -2.2132e-03 
   +1.8810e-03    +1.7253e-03    -2.3089e-03    -2.8374e-03 

 Press return to continue. 


 ------------------------------------
 Copy/Past into the octave window.

 A=[
-828,+6,+321,+504;
+555,+300,+507,-830;
+303,+959,+719,-612;
-458,-594,-64,-25]

format short e
 inv(A)

 invA :                      c_Inv_A_mR(Ab,invA);
   +9.6778e-04    +2.4025e-03    -2.3558e-03    -2.5803e-03 
   -1.1140e-03    -2.3055e-03    +2.1822e-03    +6.6390e-04 
   +2.6791e-03    +3.5312e-03    -2.4923e-03    -2.2132e-03 
   +1.8810e-03    +1.7253e-03    -2.3089e-03    -2.8374e-03 


 Press   return to continue
 Press X return to stop