hqr.dem

Delphi Pascal 数据挖掘领域算法包 数值算法大全

PROGRAM d11r7(input,output);
(* driver for routine HQR *)
CONST
   np=5;
TYPE
   glnpnp = ARRAY [1..np,1..np] OF real;
   glnp = ARRAY [1..np] OF real;
VAR
   i,j : integer;
   a : glnpnp;
   wi,wr : glnp;

(*$I MODFILE.PAS *)
(*$I BALANC.PAS *)

(*$I ELMHES.PAS *)

(*$I HQR.PAS *)

BEGIN
   a[1,1] := 1.0; a[1,2] := 2.0; a[1,3] := 0.0;
   a[1,4] := 0.0; a[1,5] := 0.0;
   a[2,1] := -2.0; a[2,2] := 3.0; a[2,3] := 0.0;
   a[2,4] := 0.0; a[2,5] := 0.0;
   a[3,1] := 3.0; a[3,2] := 4.0; a[3,3] := 50.0;
   a[3,4] := 0.0; a[3,5] := 0.0;
   a[4,1] := -4.0; a[4,2] := 5.0; a[4,3] := -60.0;
   a[4,4] := 7.0; a[4,5] := 0.0;
   a[5,1] := -5.0; a[5,2] := 6.0; a[5,3] := -70.0;
   a[5,4] := 8.0; a[5,5] := -9.0;
   writeln('matrix:');
   FOR i := 1 to np DO BEGIN
      FOR j := 1 to np DO write(a[i,j]:12:2);
      writeln
   END;
   balanc(a,np);
   elmhes(a,np);
   hqr(a,np,wr,wi);
   writeln('eigenvalues:');
   writeln('real':11,'imag.':16);
   FOR i := 1 to np DO BEGIN
      writeln('  ',wr[i]:13,'  ',wi[i]:13)
   END
END.