/usr/include/oce/math_FunctionWithDerivative.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.
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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_FunctionWithDerivative_HeaderFile
#define _math_FunctionWithDerivative_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 _math_Function_HeaderFile
#include <math_Function.hxx>
#endif
#ifndef _Standard_Boolean_HeaderFile
#include <Standard_Boolean.hxx>
#endif
#ifndef _Standard_Real_HeaderFile
#include <Standard_Real.hxx>
#endif
//! This abstract class describes the virtual functions associated with <br>
//! a function of a single variable for which the first derivative is <br>
//! available. <br>
class math_FunctionWithDerivative : public math_Function {
public:
DEFINE_STANDARD_ALLOC
Standard_EXPORT virtual void Delete() ;
Standard_EXPORT virtual ~math_FunctionWithDerivative(){Delete();}
//! Computes the value <F>of the function for the variable <X>. <br>
//! Returns True if the calculation were successfully done, <br>
//! False otherwise. <br>
Standard_EXPORT virtual Standard_Boolean Value(const Standard_Real X,Standard_Real& F) = 0;
//! Computes the derivative <D> of the function <br>
//! for the variable <X>. <br>
//! Returns True if the calculation were successfully done, <br>
//! False otherwise. <br>
Standard_EXPORT virtual Standard_Boolean Derivative(const Standard_Real X,Standard_Real& D) = 0;
//! Computes the value <F> and the derivative <D> of the <br>
//! function for the variable <X>. <br>
//! Returns True if the calculation were successfully done, <br>
//! False otherwise. <br>
Standard_EXPORT virtual Standard_Boolean Values(const Standard_Real X,Standard_Real& F,Standard_Real& D) = 0;
protected:
private:
};
// other Inline functions and methods (like "C++: function call" methods)
#endif
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