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Comment:Now packages up mtt_solve_lud OR mtt_solve_svd
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SHA3-256: 1c85e9979639a14463054a36709c810ce8f65e67134e8d0460747f88e30c9fc2
User & Date: gawthrop@users.sourceforge.net on 1999-10-26 23:44:36
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Context
1999-10-26
23:45:30
Now calls mtt_solve instead of mtt_lud
(mtt_lud is now called by mtt_solve) check-in: bb3161228e user: gawthrop@users.sourceforge.net tags: origin/master, trunk
23:44:36
Now packages up mtt_solve_lud OR mtt_solve_svd check-in: 1c85e99796 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
23:40:37
Put small as a constant - now has same arg list as mtt_solve_lud check-in: 126fc22ab7 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
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Modified mttroot/mtt/bin/trans/p/mtt_solve.p from [ce9463201c] to [054ffa4011]. 

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PROCEDURE mtt_solve(VAR x     : StateVector;
			A     : StateMatrix;
		    VAR B     : StateVector;
			n     : integer;
			Small : real);

{

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % $Id$
% % $Log$



% % Revision 1.1  1998/08/13 08:51:57  peterg
% % Initial revision
% %
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 }

VAR
   i	     : integer;
   wmax,wmin : real;
   w	     : StateVector ;
   v	     : StateMatrix;

(*$I svdcmp.p *)
(*$I svbksb.p *)

BEGIN{mtt_solve}
(* decompose matrix A using SVD *)
   svdcmp(A,n,n,w,v);
   
(* find maximum singular value *)
   wmax := 0.0;
   FOR i := 1 to n DO BEGIN
      IF  (w[i] > wmax) THEN  wmax := w[i]
   END;
   
(* define "small" *)
   wmin := wmax*Small;
   
(* zero the "small" singular values *)
   FOR i := 1 to n DO BEGIN
      IF  (w[i] < wmin) THEN  w[i] := 0.0
   END;
   
(* backsubstitute for B *)
      svbksb(A,w,v,n,n,B,x);
   
END{mtt_solve};




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PROCEDURE mtt_solve(VAR x     : StateVector;
			A     : StateMatrix;
		    VAR B     : StateVector;
			n     : integer);


{

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % $Id$
% % $Log$
% % Revision 1.2  1998/08/14 12:09:13  peterg
% % A passed by value - its destroyed by SVDcm
% %
% % Revision 1.1  1998/08/13 08:51:57  peterg
% % Initial revision
% %
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 }

VAR
   i	     : integer;
   wmax,wmin : real;
   w	     : StateVector ;
   v	     : StateMatrix;

(*$I mtt_solve_lud.p *)
(* I mtt_solve_svd.p *)

BEGIN{mtt_solve}


      mtt_solve_lud(xsub,AAsub,BB,Nx);





      (*** mtt_solve_svd(xsub,AAsub,BB,Nx); ***)











END{mtt_solve};

MTT: Model Transformation Tools
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