Linear Algebra and the C Language/a0jf

/* ------------------------------------ */
/*  Save as :   c00b.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
int main(void)
{ 
double s = 5;

double u_T[R1*C3] = {    4,   2,   5};                                             
double v_T[R1*C3] = {    3,   4,   1};

double **U_T = ca_A_mR(u_T , i_mR(R1, C3));
double **V_T = ca_A_mR(v_T , i_mR(R1, C3));

double **sU_T    = smul_mR(s,U_T,      i_mR(R1, C3));  
double **sV_T    = smul_mR(s,V_T,      i_mR(R1, C3)); 
 
double **UxV_T   =  UxV_mR(U_T,V_T,    i_mR(R1,C3));
double **s_UxV_T = smul_mR(s,UxV_T,    i_mR(R1, C3));

double **sUxV_T  =   UxV_mR(sU_T,V_T,  i_mR(R1,C3));
double **UxsV_T  =   UxV_mR(U_T,sV_T,  i_mR(R1,C3));
   
  clrscrn();
  printf("  s = %+.0f\n\n",s);         
  printf("  u_T:");
  p_mR(U_T, S4,P0,C6);
  printf("  v_T:");
  p_mR(V_T, S4,P0,C6);

  printf("\n"
         "                  s (uxv) == su x v == u x sv\n\n"
         " s (uxv):");    
  p_mR(s_UxV_T, S5,P0,C6);

  printf("  su x v:");    
  p_mR(sUxV_T, S5,P0,C6);
  
  printf("  u x sv:");    
  p_mR(UxsV_T, S5,P0,C6);
  
  stop();
  
  f_mR(U_T); 
  f_mR(V_T); 
  
  f_mR(sU_T); 
  f_mR(sV_T); 
  
  f_mR(UxV_T); 
  f_mR(s_UxV_T);

  f_mR(sUxV_T); 
  f_mR(UxsV_T);

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

  s = +5

  u_T:
  +4   +2   +5 

  v_T:
  +3   +4   +1 


                  s (uxv) == su x v == u x sv

 s (uxv):
  -90   +55   +50 

  su x v:
  -90   +55   +50 

  u x sv:
  -90   +55   +50 

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