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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkExpImageFilter.h,v $
Language: C++
Date: $Date: 2007-11-28 13:36:19 $
Version: $Revision: 1.23 $
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 __itkExpImageFilter_h
#define __itkExpImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "vnl/vnl_math.h"
#if defined(_MSC_VER) && (_MSC_VER >= 1300)
#pragma function(exp)
#endif
namespace itk
{
/** \class ExpImageFilter
* \brief Computes the vcl_exp(x) pixel-wise
*
*
* \ingroup IntensityImageFilters Multithreaded
*
*/
namespace Function {
template< class TInput, class TOutput>
class Exp
{
public:
Exp() {};
~Exp() {};
bool operator!=( const Exp & ) const
{
return false;
}
bool operator==( const Exp & other ) const
{
return !(*this != other);
}
#if defined(_MSC_VER) && (_MSC_VER == 1300)
#pragma optimize("g",off)
#endif
inline TOutput operator()( const TInput & A )
{
return (TOutput)vcl_exp((double)A);
}
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ExpImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Exp<
typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef ExpImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Function::Exp< typename TInputImage::PixelType,
typename TOutputImage::PixelType> > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(ExpImageFilter,
UnaryFunctorImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputConvertibleToDoubleCheck,
(Concept::Convertible<typename TInputImage::PixelType, double>));
itkConceptMacro(DoubleConvertibleToOutputCheck,
(Concept::Convertible<double, typename TOutputImage::PixelType>));
/** End concept checking */
#endif
protected:
ExpImageFilter() {}
virtual ~ExpImageFilter() {}
private:
ExpImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
#if defined(_MSC_VER) && (_MSC_VER == 1300)
#pragma optimize("",on)
#endif
} // end namespace itk
#endif
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