Linear Algebra and the C Language/a082


Install and compile this file in your working directory.

/* ------------------------------------ */
/*  Save as:   c00d.c                   */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define   RA R3
#define   CA C3
#define   Cb C1
/* ------------------------------------ */
int main(void)
{
double ab[RA*(CA+Cb)]={
    -804,     -884,     +529,      +30, 
    -783,     +367,     +583,     -826, 
    -804,     -884,     +529,      +30   
};

double **Ab =   ca_A_mR(ab, i_Abr_Ac_bc_mR(RA,CA,Cb));

  clrscrn();
  printf(" Copy/Paste into the octave window.\n\n");
  p_Octave_mR(Ab,"Ab",P0);
  printf("\n rref(Ab,.00000000001)\n\n");

  printf(" gj_PP_mR(Ab,YES)                  The system is consistent");  
  p_mR(gj_PP_mR(Ab,YES), S10,P4,C7);
  
  is_system_consistent_mR(Ab);
  stop();

  f_mR(Ab);

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

Screen output example:

 Copy/Paste into the octave window.

 Ab=[
-804,-884,+529,+30;
-783,+367,+583,-826;
-804,-884,+529,+30]


 rref(Ab,.00000000001)

 gj_PP_mR(Ab,YES)                  The system is consistent
   +1.0000    +0.0000    -0.7187    +0.7285 
   +0.0000    +1.0000    +0.0552    -0.6965 
   +0.0000    +0.0000    +0.0000    +0.0000 

 Press return to continue.