Mathc matrices/01s

Matrices triangulaires

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	c00d.c

/* ------------------------------------ */
/*  Save as :   c00d.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int rc)
{
double **A     = rupper_mR(i_mR(rc,rc),9);
double **invA  =           i_mR(rc,rc);
double **AinvA =           i_mR(rc,rc);

  clrscrn();

  printf(" A:");
  p_mR(A ,S4,P0,C6);

  printf(" invA:");
  pE_mR(invgj_mR(A,invA) ,S4,P5,C6);

  printf(" A invA:");
  p_mR(mul_mR(A,invA,AinvA) ,S4,P5,C6);
    
  f_mR(A);
  f_mR(invA);
  f_mR(AinvA);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));
  
   do 
         fun(rp_I(RC4)+RC1);
        
    while(stop_w());
        
  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */

Exemple de sortie écran :

 A : 
  +7   +5   -3   -6   -2 
  +0   +5   -3   -5   +6 
  +0   +0   +2   -4   +6 
  +0   +0   +0   -9   +3 
  +0   +0   +0   +0   -7 

 invA : 
+0.14286 -0.14286 +0.00000 -0.01587 -0.17007 
-0.00000 +0.20000 +0.30000 -0.24444 +0.32381 
-0.00000 -0.00000 +0.50000 -0.22222 +0.33333 
+0.00000 +0.00000 +0.00000 -0.11111 -0.04762 
+0.00000 +0.00000 +0.00000 -0.00000 -0.14286 

 A * invA : 
+1.00000 -0.00000 +0.00000 +0.00000 +0.00000 
+0.00000 +1.00000 +0.00000 +0.00000 +0.00000 
+0.00000 +0.00000 +1.00000 +0.00000 +0.00000 
+0.00000 +0.00000 +0.00000 +1.00000 +0.00000 
+0.00000 +0.00000 +0.00000 +0.00000 +1.00000 


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