Linear Algebra and the C Language/a0fk

Install and compile this file in your working directory.

/* ------------------------------------ */
/*  Save as :   c00a.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
/* ------------------------------------ */
double **X_rdiag_mR(
double **A,
int      n
)
{
int      r;

  isquare_mR(A,"rdiag_mR;","(A)");
  
  m0_mR(A);
  
  for(r=R1; r<A[R_SIZE][C0]; r++)

             A[r][r] = r_I(n);
 return(A);
}
/* ------------------------------------ */
/* ------------------------------------ */
void fun(int rc)
{
double **A = rdiag_mR(i_mR(rc,rc),9);

  clrscrn();

  printf(" rdiag_mR() :  Diagonal matrix\n\n" 
         " A[R%d,C%d] :",rsize_R(A),csize_R(A));
  p_mR(A,S4,P0,C8);
   
  f_mR(A);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));
  
  do
        fun(rp_I(RC8));

  while(stop_w());       

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

Diagonal matrix:

Screen output example:

                                                                                       
 rdiag_mR() : Diagonal matrix  

 A[R4,C4] :
  -9   +0   +0   +0 
  +0   +2   +0   +0 
  +0   +0   -5   +0 
  +0   +0   +0   -1 


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