Linear Algebra and the C Language/a0ln

/* ------------------------------------ */
/*  Save as:   c04b.c                   */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define   RA R2
#define   CA C4
#define   Cb C1
/* ------------------------------------ */
int main(void)
{
double a_Tb[RA*(CA+Cb)]={
  2,0,0,4,0,
  0,3,0,5,0
};
 
double **A_Tb =   ca_A_mR(a_Tb, i_Abr_Ac_bc_mR(RA,CA,Cb));
double **A_T  = c_Ab_A_mR(A_Tb,           i_mR(RA,CA));
double **b    = c_Ab_b_mR(A_Tb,           i_mR(RA,Cb));

  clrscrn();
  printf(" Verify if AT is a basis for a Row Space by Row Reduction.\n\n" 
         " A_T:");
  p_mR(A_T,S6,P1,C10);
  
  printf(" b:");
  p_mR(b,S6,P1,C10);
  
  printf(" A_Tb:");
  p_mR(A_Tb,S6,P1,C10);
  stop();

  clrscrn();
  printf(" The nonzero row vectors of A_Tb form a basis\n"
         " for the row space of A_T, and hence form a  \n"
         " basis for the column space of A           \n\n"
         " A_Tb:");
  p_mR(A_Tb,S7,P3,C10);
  
  printf(" A_Tb:  gj_PP_mR(A_Tb,NO);");
  p_mR(gj_PP_mR(A_Tb,NO),S7,P3,C10);
  stop();
   
  f_mR(A_Tb);
  f_mR(b);
  f_mR(A_T);
  
  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */

                                                                                       
 Verify if AT is a basis for a Row Space by Row Reduction.

 A_T:
  +2.0   +0.0   +0.0   +4.0 
  +0.0   +3.0   +0.0   +5.0 

 b:
  +0.0 
  +0.0 

 A_Tb:
  +2.0   +0.0   +0.0   +4.0   +0.0 
  +0.0   +3.0   +0.0   +5.0   +0.0 

 Press return to continue. 


 The nonzero row vectors of A_Tb form a basis
 for the row space of A_T, and hence form a  
 basis for the column space of A           

 A_Tb:
 +2.000  +0.000  +0.000  +4.000  +0.000 
 +0.000  +3.000  +0.000  +5.000  +0.000 

 A_Tb:  gj_PP_mR(A_Tb,NO);
 +1.000  +0.000  +0.000  +2.000  +0.000 
 +0.000  +1.000  +0.000  +1.667  +0.000 

 Press return to continue.