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126 lines
3.9 KiB
Plaintext
Executable File
126 lines
3.9 KiB
Plaintext
Executable File
-- 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) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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class BracketMinimum from math
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---Purpose:Given two distinct initial points, BracketMinimum
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-- implements the computation of three points (a, b, c) which
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-- bracket the minimum of the function and verify A less than
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-- B, B less than C and F(A) less than F(B), F(B) less than (C).
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uses Vector from math,
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Matrix 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(F: in out Function; A, B: Real)
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---Purpose:
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-- Given two initial values this class computes a
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-- bracketing triplet of abscissae Ax, Bx, Cx
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-- (such that Bx is between Ax and Cx, F(Bx) is
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-- less than both F(Bx) and F(Cx)) the Brent minimization is done
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-- on the function F.
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returns BracketMinimum;
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Create(F: in out Function; A, B, FA: Real)
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---Purpose:
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-- Given two initial values this class computes a
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-- bracketing triplet of abscissae Ax, Bx, Cx
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-- (such that Bx is between Ax and Cx, F(Bx) is
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-- less than both F(Bx) and F(Cx)) the Brent minimization is done
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-- on the function F.
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-- This constructor has to be used if F(A) is known.
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returns BracketMinimum;
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Create(F: in out Function; A, B, FA, FB: Real)
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---Purpose:
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-- Given two initial values this class computes a
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-- bracketing triplet of abscissae Ax, Bx, Cx
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-- (such that Bx is between Ax and Cx, F(Bx) is
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-- less than both F(Bx) and F(Cx)) the Brent minimization is done
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-- on the function F.
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-- This constructor has to be used if F(A) and F(B) are known.
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returns BracketMinimum;
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Perform(me: in out; F: in out Function; A, B: Real)
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---Purpose: Is used internally by the constructors.
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is static protected;
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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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Values(me; A, B, C: out Real)
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---Purpose: Returns the bracketed triplet of abscissae.
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-- Exceptions
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-- StdFail_NotDone if the algorithm fails (and IsDone returns false).
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raises NotDone
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is static;
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FunctionValues(me; FA, FB, FC: out Real)
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---Purpose: returns the bracketed triplet function values.
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-- Exceptions
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-- StdFail_NotDone if the algorithm fails (and IsDone returns false).
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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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Ax: Real;
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Bx: Real;
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Cx: Real;
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FAx: Real;
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FBx: Real;
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FCx: Real;
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myFA: Boolean;
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myFB: Boolean;
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end BracketMinimum;
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