/usr/include/oce/math_BracketedRoot.hxx is in liboce-foundation-dev 0.17.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to
// this header file considered to be the "object code" form of the original source.
#ifndef _math_BracketedRoot_HeaderFile
#define _math_BracketedRoot_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <Standard_OStream.hxx>
class StdFail_NotDone;
class math_Function;
//! This class implements the Brent method to find the root of a function
//! located within two bounds. No knowledge of the derivative is required.
class math_BracketedRoot
{
public:
DEFINE_STANDARD_ALLOC
//! The Brent method is used to find the root of the function F between
//! the bounds Bound1 and Bound2 on the function F.
//! If F(Bound1)*F(Bound2) >0 the Brent method fails.
//! The tolerance required for the root is given by Tolerance.
//! The solution is found when :
//! abs(Xi - Xi-1) <= Tolerance;
//! The maximum number of iterations allowed is given by NbIterations.
Standard_EXPORT math_BracketedRoot(math_Function& F, const Standard_Real Bound1, const Standard_Real Bound2, const Standard_Real Tolerance, const Standard_Integer NbIterations = 100, const Standard_Real ZEPS = 1.0e-12);
//! Returns true if the computations are successful, otherwise returns false.
Standard_Boolean IsDone() const;
//! returns the value of the root.
//! Exception NotDone is raised if the minimum was not found.
Standard_Real Root() const;
//! returns the value of the function at the root.
//! Exception NotDone is raised if the minimum was not found.
Standard_Real Value() const;
//! returns the number of iterations really done during the
//! computation of the Root.
//! Exception NotDone is raised if the minimum was not found.
Standard_Integer NbIterations() const;
//! Prints on the stream o information on the current state
//! of the object.
Standard_EXPORT void Dump (Standard_OStream& o) const;
protected:
private:
Standard_Boolean Done;
Standard_Real TheRoot;
Standard_Real TheError;
Standard_Integer NbIter;
};
#include <math_BracketedRoot.lxx>
#endif // _math_BracketedRoot_HeaderFile
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