niftkMathsUtils.h

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/*=============================================================================

  NifTK: A software platform for medical image computing.

  Copyright (c) University College London (UCL). All rights reserved.

  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.

  See LICENSE.txt in the top level directory for details.

=============================================================================*/

#ifndef niftkMathsUtils_h
#define niftkMathsUtils_h

#include "niftkCommonWin32ExportHeader.h"
#include <vector>
#include <cstdlib>

namespace niftk {

extern "C++" NIFTKCOMMON_WINEXPORT bool IsCloseToZero(const double& value, const double& tolerance = 0.000001);


extern "C++" NIFTKCOMMON_WINEXPORT std::pair < double, double > FindMinimumValues
  ( std::vector < std::pair < double, double>  > inputValues,
    std::pair <unsigned int , unsigned int > * indexes = NULL );


extern "C++" NIFTKCOMMON_WINEXPORT double Mean(const std::vector<double>& input);


extern "C++" NIFTKCOMMON_WINEXPORT double StdDev(const std::vector<double>& input);


extern "C++" NIFTKCOMMON_WINEXPORT double RMS(const std::vector<double>& input);


extern "C++" NIFTKCOMMON_WINEXPORT double ModifiedSignum(double value);


extern "C++" NIFTKCOMMON_WINEXPORT double SafeSQRT(double value);

} // end namespace

#endif