Linear Algebra and the C Language/a0a3


Install and compile this file in your working directory. 

/* ------------------------------------ */
/*  Save as :   c00b.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **u  = r_mR(i_mR(r,C1),9.);

  clrscrn();
  printf(" u :");
  p_mR(u,S3,P0,C6);
  
  printf("            <u,u> = ||u||^2   \n\n");
  printf("   (<u,u>)^(1/2)  = %.3f \n",
             pow(dot_R(u,u),(1./2.)));
  
  printf("            ||u|| = %.3f \n\n",
             norm_R(u));

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

  srand(time(&t));

do
{
  fun(rp_I(R3)+R2);

} while(stop_w());

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


Screen output example: 

                                                                                       
 u :
 +1 
 -3 
 -3 
 +9 
 -4 

            <u,u> = ||u||^2   

   (<u,u>)^(1/2)  = 10.770 
            ||u|| = 10.770 


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