Linear Algebra and the C Language/a03q

/* ------------------------------------ */
/*  Save as:   c02a.c                   */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define   RA R3
#define   CA C5
/* ------------------------------------ */
#define FACTOR_E        +1.E-0         
/* ------------------------------------ */
void fun(void)
{
double **A    =       r_mR(        i_mR(RA,CA),9);
double **Pinv = Pinv_Cn_mR(A,      i_mR(CA,RA),FACTOR_E);     
double **Ide  =     mul_mR(A,Pinv, i_mR(RA,RA));    

  clrscrn();
  printf(" A:");
  p_mR(A, S7,P2,C7);   
  
  printf(" PseudoInverse = V invS_T U_T ");
  pE_mR(Pinv, S12,P4,C10);
  
  printf(" Ide =  A Pinv                   (The right inverse of A)"); 
  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;
}
/* ------------------------------------ */
/* ------------------------------------ */

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

 PseudoInverse = V * invS_T * U_T 
 +5.7066e-02  -5.2471e-02  +4.6021e-03 
 +1.8842e-02  +5.2565e-02  -6.2457e-02 
 -1.8199e-02  +4.7341e-02  +2.6768e-02 
 -7.1415e-02  +2.3166e-02  +8.2423e-02 
 -6.1313e-02  -4.0709e-02  -5.3345e-03 

 Ide =  A * Pinv                   (The right inverse of A)
  +1.00   -0.00   -0.00 
  +0.00   +1.00   -0.00 
  +0.00   +0.00   +1.00 


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