/usr/include/InsightToolkit/Numerics/FEM/itkFEMUtility.h is in libinsighttoolkit3-dev 3.20.1-1.
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 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkFEMUtility.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkFEMUtility_h
#define __itkFEMUtility_h
#include <string>
#include <iostream>
namespace itk {
namespace fem {
/**
* \file itkFEMUtility.h
* \brief Includes various helper classes and functions used
througout the FEM code.
*/
/**
* \class GaussIntegrate
* \brief Use the Gauss-Legendre formula to perform integration
*
* Numerical integration (Gauss-Legendre formula).
* Integrates function f(x) from x=a to x=b in n points.
*/
class GaussIntegrate {
public:
static const double zero;
static const double one;
static const double two;
static const double z[110];
static const double w[110];
double Integrate(double (*f)(double), double a, double b, int n=3);
};
}} /* end namespace itk */
#endif /* #ifndef __itkFEMUtility_h */
|