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Common
include
itkCompensatedSummation.h
Go to the documentation of this file.
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/*=========================================================================
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*
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* Copyright Insight Software Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*=========================================================================*/
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#ifndef __itkCompensatedSummation_h
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#define __itkCompensatedSummation_h
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#include "
itkNumericTraits.h
"
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#include "
itkConceptChecking.h
"
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namespace
itk
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{
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template
<
class
TFloat >
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class
CompensatedSummation
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{
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public
:
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typedef
TFloat
FloatType
;
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typedef
typename
NumericTraits< FloatType >::AccumulateType
AccumulateType
;
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typedef
CompensatedSummation
Self
;
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CompensatedSummation
();
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CompensatedSummation
(
const
Self
& rhs );
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void
operator=
(
const
Self
& rhs );
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void
AddElement
(
const
FloatType
& element );
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Self
&
operator+=
(
const
FloatType
& rhs );
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Self
&
operator-=
(
const
FloatType
& rhs );
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Self
&
operator*=
(
const
FloatType
& rhs );
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Self
&
operator/=
(
const
FloatType
& rhs );
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void
ResetToZero
();
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Self
&
operator=
(
const
FloatType
& rhs );
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const
AccumulateType
&
GetSum
()
const
;
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private
:
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AccumulateType
m_Sum
;
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AccumulateType
m_Compensation
;
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// Maybe support more types in the future with template specialization.
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#ifdef ITK_USE_CONCEPT_CHECKING
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itkConceptMacro
( OnlyDefinedForFloatingPointTypes, (
itk::Concept::IsFloatingPoint< TFloat >
) );
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#endif // ITK_USE_CONCEPT_CHECKING
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};
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void
ITKCommon_EXPORT
CompensatedSummationAddElement
(
float
& compensation,
float
& sum,
const
float
& element );
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void
ITKCommon_EXPORT
CompensatedSummationAddElement
(
double
& compensation,
double
& sum,
const
double
& element );
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}
// end namespace itk
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#ifndef ITK_MANUAL_INSTANTIATION
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#include "itkCompensatedSummation.hxx"
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#endif
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#endif
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