lufdet.c

[[ Complex Matrices : Language c]]

/* gjid03.c                         freeware                   [e-mail]
*/

/* --------------------------------- INCLUDES ------------------------------- */
#include "y_ahfile.h"

/* ------------------------------------- FUNCTION --------------------------  */
/* Do    :                                                                    */
/*                                                                            */
/* -------------------------------------------------------------------------- */
void gjA(int n)
{
complexF a;
complexF l;

double pbA[MXR][MXC*C4];mzF mA={MXR,MXC*C4,&pbA[0][0]};
double pbL[MXR][MXC*C4];mzF mL={MXR,MXC*C4,&pbL[0][0]};
double pbU[MXR][MXC*C4];mzF mU={MXR,MXC*C4,&pbU[0][0]};
double pbT[MXR][MXC*C4];mzF mT={MXR,MXC*C4,&pbT[0][0]};

                     mA.rows=n;      mA.cols=n*C4;
                     mL.rows=n;      mL.cols=n*C4;
                     mU.rows=n;      mU.cols=n*C4;
                     mT.rows=n;      mT.cols=n*C4;
/*-------------------------------- PROGRAM ---------------------------------- */
   if(n==4) rnd_mzF(&mA,2,1);
   if(n==3) rnd_mzF(&mA,2,2);
   if(n==2) rnd_mzF(&mA,3,3);

  clrscrn();
  printf("                                                       A :");
  p_mizF3(&mA);
  LU_mzF(&mA,&mL,&mU);
  printf("                                                       L :");
  p_mizF3(&mL);
  printf("                                                       U :");
  p_mizF3(&mU);
  printf("                                                      LU_mzF :");
  mul_mzF(&mL,&mU,&mT);
  p_mizF3(&mT);

   printf("\n");
   printf(" det(A) = "); p_izF(det_zF(&mA));printf("\n");
   printf(" det(L) = "); p_izF(det_zF(&mL));printf("\n");

}

void hello(void)
{
  printf("\n Freeware by : xhunga bernard 06000 Nice France.\n");
  printf("\n                                                  ");
  printf("\n            Det(A) = Det(L).                      ");
  printf("\n            ****************                    \n");
  printf("\n The size of mA : 2x2 ... 4x4.                  \n");
  printf("\n           ex : \"LUFdet.exe\"                  \n");
  printf("\n You can choose the size :                      \n");
  printf("\n           ex : \"LUFdet.exe 2\" -> mA 2x2        ");
  printf("\n                \"LUFdet.exe 3\" -> mA 3x3        ");
  printf("\n                \"LUFdet.exe 4\" -> mA 4x4        ");
  printf("\n\n                                                ");
  printf("\n Distributed  by :  http://www.simtel.net/        ");
  printf("\n                                                  ");
  printf("\n Press return to continue                          ");
  printf("\n                                                  ");

  getchar();
}

/* --------------------------------- MAIN ----------------------------------- */
int main(int argc, char *argv[])
{
time_t t;
int    n;

/*-------------------------------- PROGRAM ---------------------------------- */
  srand(time(&t));
  hello();
do
{
if( argc == 2 && atoi(argv[1]))
 {  n = atoi(argv[1]); if( n > 4){n=4;}}
else
 {  n = rndp_I(4);}
if( n < 2){n=2;}


  gjA(n);


printf("\n Press 'X' Return to stop\n");
} while(toupper(getchar())!='X');

  return 0;
}