Linear Algebra and the C Language/a06q

Install and compile this file in your working directory.

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

  clrscrn();
  printf(" A:");
  p_mR(A, S3,P0,C6);

  printf(" At:");
  p_mR(At, S3,P0,C6);

  printf(" det_R(A)  = %+.0f\n",det_R(A));
  printf(" det_R(At) = %+.0f\n",det_R(At));

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

  srand(time(&t));
do
{
  fun(rp_I(RC5)+RC1);
  
} while(stop_w());

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

Screen output example:

 A
 +1  +3  -3  +2  -5 
 +6  -2  -1  -4  -1 
 -5  +8  +6  -6  -4 
 +4  -9  +1  -2  -2 
 -3  -1  -7  +3  -7 

 At
 +1  +6  -5  +4  -3 
 +3  -2  +8  -9  -1 
 -3  -1  +6  +1  -7 
 +2  -4  -6  -2  +3 
 -5  -1  -4  -2  -7 

 det_R(A)  = +22207
 det_R(At) = +22207

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