Mathc complexes/030

Application

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	c00a.c

/* ------------------------------------ */
/*  Save as :   c00a.c                  */
/* ------------------------------------ */
#include "w_a.h"
/* ------------------------------------ */
#define FACTOR_E    +1.E-2         
#define RCA          RC4  
/* ------------------------------------ */       
/* ------------------------------------ */
void fun(void)
{                          
double a[RCA*(RCA*C2)] ={   
+36.313679157,+0.000000000, +19.585408427,-0.742196710, -15.875721237,+0.689662875, +8.211253265,+22.976851849, 
+19.585408427,+0.742196710, +63.726719706,+0.000000000, +10.890345307,+2.396948766, -1.434784341,+15.056472852, 
-15.875721237,-0.689662875, +10.890345307,-2.396948766, +16.126426155,-0.000000000, -3.467769379,-0.518070163, 
+8.211253265,-22.976851849, -1.434784341,-15.056472852, -3.467769379,+0.518070163, +55.833174982,+0.000000000  
};
                       
double **A =     ca_A_mZ(a, i_mZ(RCA,RCA));
double **V =                i_mZ(RCA,RCA);
double **EigsValue  =       i_mZ(RCA,C1);

  clrscrn();
  printf(" Copy/Past into the octave windows \n\n");
  p_Octave_mZ(A,"a",P9,P9);  
  printf(" format short e\n"
         " [V, E]  = eigs (a,%d)\n\n", RCA);
  stop();
  
  clrscrn();
  eigs_V_mZ(A,V,FACTOR_E);
  printf(" V :");
  p_mZ(V, S10,P4, S8,P4, C4);  

  eigs_mZ(A,EigsValue);
  printf(" EigsValue :");
  p_mZ(EigsValue, S10,P4, S8,P4, C4); 
  stop();
    
  f_mZ(A);
  f_mZ(V);    
  f_mZ(EigsValue);
}
/* ------------------------------------ */
int main(void)
{
    fun();

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

Exemple de référence :  Il permet de vérifier les calculs.

Exemple de sortie écran :

 Copy/Past into the octave windows 

 a=[
+36.313679157+0.000000000*i,+19.585408427-0.742196710*i,-15.875721237+0.689662875*i,+8.211253265+22.976851849*i;
+19.585408427+0.742196710*i,+63.726719706+0.000000000*i,+10.890345307+2.396948766*i,-1.434784341+15.056472852*i;
-15.875721237-0.689662875*i,+10.890345307-2.396948766*i,+16.126426155-0.000000000*i,-3.467769379-0.518070163*i;
+8.211253265-22.976851849*i,-1.434784341-15.056472852*i,-3.467769379+0.518070163*i,+55.833174982+0.000000000*i]

 format short e
 [V, E]  = eigs (a,4)

 Press return to continue. 


 V :
   +0.1123 +0.4732i    +0.2751 +0.1940i    -0.3012 -0.4676i    -0.1337 -0.5682i 
   +0.0279 +0.6400i    -0.1939 -0.6645i    +0.1242 -0.1500i    +0.0334 +0.2674i 
   -0.0221 -0.0131i    -0.2698 -0.2872i    +0.2822 +0.4536i    -0.1337 -0.7354i 
   +0.5937 -0.0000i    +0.5023 +0.0000i    +0.6060 +0.0000i    +0.1671 +0.0000i 

 EigsValue :
  +92.0000 +0.0000i 
  +52.0000 -0.0000i 
  +28.0000 -0.0000i 
   +0.0000 -0.0000i 

 Press return to continue.