math_BracketMinimum Class Reference

Given two distinct initial points, BracketMinimum implements the computation of three points (a, b, c) which bracket the minimum of the function and verify A less than B, B less than C and F(A) less than F(B), F(B) less than (C). More...

#include <math_BracketMinimum.hxx>

Public Member Functions
	math_BracketMinimum (math_Function &F, const Standard_Real A, const Standard_Real B)
	Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F. More...
	math_BracketMinimum (math_Function &F, const Standard_Real A, const Standard_Real B, const Standard_Real FA)
	Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F. This constructor has to be used if F(A) is known. More...
	math_BracketMinimum (math_Function &F, const Standard_Real A, const Standard_Real B, const Standard_Real FA, const Standard_Real FB)
	Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F. This constructor has to be used if F(A) and F(B) are known. More...
Standard_Boolean	IsDone () const
	Returns true if the computations are successful, otherwise returns false. More...
void	Values (Standard_Real &A, Standard_Real &B, Standard_Real &C) const
	Returns the bracketed triplet of abscissae. Exceptions StdFail_NotDone if the algorithm fails (and IsDone returns false). More...
void	FunctionValues (Standard_Real &FA, Standard_Real &FB, Standard_Real &FC) const
	returns the bracketed triplet function values. Exceptions StdFail_NotDone if the algorithm fails (and IsDone returns false). More...
void	Dump (Standard_OStream &o) const
	Prints on the stream o information on the current state of the object. Is used to redefine the operator <<. More...

Protected Member Functions
void	Perform (math_Function &F, const Standard_Real A, const Standard_Real B)
	Is used internally by the constructors. More...

Detailed Description

Given two distinct initial points, BracketMinimum implements the computation of three points (a, b, c) which bracket the minimum of the function and verify A less than B, B less than C and F(A) less than F(B), F(B) less than (C).

Constructor & Destructor Documentation

math_BracketMinimum::math_BracketMinimum	(	math_Function &	F,
		const Standard_Real	A,
		const Standard_Real	B
	)

Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F.

math_BracketMinimum::math_BracketMinimum	(	math_Function &	F,
		const Standard_Real	A,
		const Standard_Real	B,
		const Standard_Real	FA
	)

Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F. This constructor has to be used if F(A) is known.

math_BracketMinimum::math_BracketMinimum	(	math_Function &	F,
		const Standard_Real	A,
		const Standard_Real	B,
		const Standard_Real	FA,
		const Standard_Real	FB
	)

Given two initial values this class computes a bracketing triplet of abscissae Ax, Bx, Cx (such that Bx is between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) the Brent minimization is done on the function F. This constructor has to be used if F(A) and F(B) are known.

Member Function Documentation

void math_BracketMinimum::Dump

(

Standard_OStream &

o

)

const

Prints on the stream o information on the current state of the object. Is used to redefine the operator <<.

void math_BracketMinimum::FunctionValues	(	Standard_Real &	FA,
		Standard_Real &	FB,
		Standard_Real &	FC
	)		const

returns the bracketed triplet function values. Exceptions StdFail_NotDone if the algorithm fails (and IsDone returns false).

Standard_Boolean math_BracketMinimum::IsDone

(

)

const

Returns true if the computations are successful, otherwise returns false.

void math_BracketMinimum::Perform ( math_Function &  F, const Standard_Real  A, const Standard_Real  B  )

protected

Is used internally by the constructors.

void math_BracketMinimum::Values	(	Standard_Real &	A,
		Standard_Real &	B,
		Standard_Real &	C
	)		const

Returns the bracketed triplet of abscissae. Exceptions StdFail_NotDone if the algorithm fails (and IsDone returns false).

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The documentation for this class was generated from the following file:

• math_BracketMinimum.hxx