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859a47c3d1
The calling of virtual methods has been removed from constructors & destructors: math_BissecNewton math_BrentMinimum math_FRPR math_FunctionSetRoot math_NewtonFunctionSetRoot math_NewtonMinimum math_Powell
139 lines
3.9 KiB
Plaintext
139 lines
3.9 KiB
Plaintext
-- Created on: 1991-05-14
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-- Created by: Laurent PAINNOT
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-- Copyright (c) 1991-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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class BrentMinimum from math
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---Purpose:
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-- This class implements the Brent's method to find the minimum of
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-- a function of a single variable.
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-- No knowledge of the derivative is required.
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uses Matrix from math,
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Vector from math,
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Function from math,
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OStream from Standard
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raises NotDone from StdFail
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is
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Create(TolX: Real;
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NbIterations: Integer = 100;
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ZEPS: Real = 1.0e-12)
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---Purpose:
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-- This constructor should be used in a sub-class to initialize
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-- correctly all the fields of this class.
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returns BrentMinimum;
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Create(TolX: Real; Fbx: Real;
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NbIterations: Integer = 100;
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ZEPS: Real = 1.0e-12)
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---Purpose:
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-- This constructor should be used in a sub-class to initialize
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-- correctly all the fields of this class.
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-- It has to be used if F(Bx) is known.
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returns BrentMinimum;
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Delete(me) is static;
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---Purpose: Destructor alias.
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---C++: inline
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---C++: alias " Standard_EXPORT virtual ~math_BrentMinimum();"
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Perform(me: in out; F: in out Function;
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Ax, Bx, Cx: Real)
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---Purpose:
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-- Brent minimization is performed on function F from a given
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-- bracketing triplet of abscissas Ax, Bx, Cx (such that Bx is
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-- between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx))
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-- The solution is found when: abs(Xi - Xi-1) <= TolX * abs(Xi) + ZEPS;
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is static;
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IsSolutionReached(me: in out; theFunction: in out Function)
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---Purpose:
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-- This method is called at the end of each iteration to check if the
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-- solution is found.
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-- It can be redefined in a sub-class to implement a specific test to
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-- stop the iterations.
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---C++:inline
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returns Boolean is virtual;
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IsDone(me)
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---Purpose: Returns true if the computations are successful, otherwise returns false.
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---C++: inline
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returns Boolean
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is static;
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Location(me)
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---Purpose: returns the location value of the minimum.
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-- Exception NotDone is raised if the minimum was not found.
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---C++: inline
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returns Real
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raises NotDone
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is static;
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Minimum(me)
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---Purpose: returns the value of the minimum.
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-- Exception NotDone is raised if the minimum was not found.
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---C++: inline
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returns Real
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raises NotDone
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is static;
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NbIterations(me)
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---Purpose: returns the number of iterations really done during the
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-- computation of the minimum.
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-- Exception NotDone is raised if the minimum was not found.
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---C++: inline
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returns Integer
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raises NotDone
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is static;
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Dump(me; o: in out OStream)
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---Purpose: Prints on the stream o information on the current state
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-- of the object.
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-- Is used to redefine the operator <<.
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is static;
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fields
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Done: Boolean;
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a: Real is protected;
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b: Real is protected;
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x: Real is protected;
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fx: Real is protected;
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fv: Real is protected;
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fw: Real is protected;
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iter: Integer;
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XTol: Real is protected;
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EPSZ: Real is protected;
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Itermax: Integer;
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myF: Boolean;
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end BrentMinimum;
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