/usr/include/oce/math_BrentMinimum.hxx is in liboce-foundation-dev 0.15-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | // This file is generated by WOK (CPPExt).
// 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_BrentMinimum_HeaderFile
#define _math_BrentMinimum_HeaderFile
#ifndef _Standard_HeaderFile
#include <Standard.hxx>
#endif
#ifndef _Standard_DefineAlloc_HeaderFile
#include <Standard_DefineAlloc.hxx>
#endif
#ifndef _Standard_Macro_HeaderFile
#include <Standard_Macro.hxx>
#endif
#ifndef _Standard_Boolean_HeaderFile
#include <Standard_Boolean.hxx>
#endif
#ifndef _Standard_Real_HeaderFile
#include <Standard_Real.hxx>
#endif
#ifndef _Standard_Integer_HeaderFile
#include <Standard_Integer.hxx>
#endif
#ifndef _Standard_OStream_HeaderFile
#include <Standard_OStream.hxx>
#endif
class StdFail_NotDone;
class math_Function;
//! This class implements the Brent's method to find the minimum of <br>
//! a function of a single variable. <br>
//! No knowledge of the derivative is required. <br>
class math_BrentMinimum {
public:
DEFINE_STANDARD_ALLOC
//! This constructor should be used in a sub-class to initialize <br>
//! correctly all the fields of this class. <br>
Standard_EXPORT math_BrentMinimum(const Standard_Real TolX,const Standard_Integer NbIterations = 100,const Standard_Real ZEPS = 1.0e-12);
//! This constructor should be used in a sub-class to initialize <br>
//! correctly all the fields of this class. <br>
//! It has to be used if F(Bx) is known. <br>
Standard_EXPORT math_BrentMinimum(const Standard_Real TolX,const Standard_Real Fbx,const Standard_Integer NbIterations = 100,const Standard_Real ZEPS = 1.0e-12);
//! Given a bracketing triplet of abscissae Ax, Bx, Cx <br>
//! (such as Bx is between Ax and Cx, F(Bx) is <br>
//! less than both F(Bx) and F(Cx)) the Brent minimization is done <br>
//! on the function F. <br>
//! The tolerance required on F is given by Tolerance. <br>
//! The solution is found when : <br>
//! abs(Xi - Xi-1) <= TolX * abs(Xi) + ZEPS; <br>
//! The maximum number of iterations allowed is given by NbIterations. <br>
Standard_EXPORT math_BrentMinimum(math_Function& F,const Standard_Real Ax,const Standard_Real Bx,const Standard_Real Cx,const Standard_Real TolX,const Standard_Integer NbIterations = 100,const Standard_Real ZEPS = 1.0e-12);
//! Brent minimization is performed on function F from a given <br>
//! bracketing triplet of abscissas Ax, Bx, Cx (such that Bx is <br>
//! between Ax and Cx, F(Bx) is less than both F(Bx) and F(Cx)) <br>
//! Warning <br>
//! The initialization constructors must have been called <br>
//! before the call to the Perform method. <br>
Standard_EXPORT void Perform(math_Function& F,const Standard_Real Ax,const Standard_Real Bx,const Standard_Real Cx) ;
//! This method is called at the end of each iteration to check if the <br>
//! solution is found. <br>
//! It can be redefined in a sub-class to implement a specific test to <br>
//! stop the iterations. <br>
Standard_EXPORT virtual Standard_Boolean IsSolutionReached(math_Function& F) ;
//! Returns true if the computations are successful, otherwise returns false. <br>
Standard_Boolean IsDone() const;
//! returns the location value of the minimum. <br>
//! Exception NotDone is raised if the minimum was not found. <br>
Standard_Real Location() const;
//! returns the value of the minimum. <br>
//! Exception NotDone is raised if the minimum was not found. <br>
Standard_Real Minimum() const;
//! returns the number of iterations really done during the <br>
//! computation of the minimum. <br>
//! Exception NotDone is raised if the minimum was not found. <br>
Standard_Integer NbIterations() const;
//! Prints on the stream o information on the current state <br>
//! of the object. <br>
//! Is used to redefine the operator <<. <br>
Standard_EXPORT void Dump(Standard_OStream& o) const;
protected:
Standard_Real a;
Standard_Real b;
Standard_Real x;
Standard_Real fx;
Standard_Real fv;
Standard_Real fw;
Standard_Real XTol;
Standard_Real EPSZ;
private:
Standard_Boolean Done;
Standard_Integer iter;
Standard_Integer Itermax;
Standard_Boolean myF;
};
#include <math_BrentMinimum.lxx>
// other Inline functions and methods (like "C++: function call" methods)
#endif
|