Linear Algebra and the C Language/a0aw

Install and compile this file in your working directory.

/* ------------------------------------ */
/*  Save as :   c00k.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **u     =   r_mR(      i_mR(r,C1),9.);
double **v     =   r_mR(      i_mR(r,C1),9.);

  clrscrn();
  printf(" u :");
  p_mR(u,S3,P0,C6);
  printf(" v :");
  p_mR(v,S3,P0,C6); 
  
  printf(" Cauchy-Schwarz : |<u,v>| <= ||u|| ||v||      \n\n"
         "       |<u,v>| = %+.0f\t ||u|| ||v|| = %+.0f\n\n\n"
         "       |<u,v>|\t <=   ||u|| ||v||               \n"
         "          %+.0f\t <=    %+.0f                   \n", 
         
                 fabs( dot_R(u, v)),
                 norm_R(u) * norm_R(v),
                 fabs( dot_R(u, v)),
                 norm_R(u) * norm_R(v) );

  f_mR(u);
  f_mR(v);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));

do
{  
  fun(rp_I(R3)+R2);
  
} while(stop_w());

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

Screen output example:

                                                                                       
 u :
 -3 
 -1 
 +7 
 +8 
 -6 

 v :
 -6 
 +3 
 +9 
 +8 
 +5 

 Cauchy-Schwarz : |<u,v>| <= ||u|| ||v||      

       |<u,v>| = +112	 ||u|| ||v|| = +185


       |<u,v>|	 <=   ||u|| ||v||               
          +112	 <=    +185                   

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