TNumericUtil::KahanAccumulator< T > Class Template Reference

#include <MELAAccumulators.h>

Public Member Functions
	KahanAccumulator ()
	KahanAccumulator (const T &value)
	KahanAccumulator (const KahanAccumulator< T > &other)
KahanAccumulator &	operator+= (const T &inc)
KahanAccumulator &	operator-= (const T &inc)
KahanAccumulator &	operator*= (const T &inc)
KahanAccumulator &	operator/= (const T &inc)
KahanAccumulator	operator+ (const T &inc)
KahanAccumulator	operator- (const T &inc)
KahanAccumulator	operator* (const T &inc)
KahanAccumulator	operator/ (const T &inc)
T	sum () const
	operator T () const

Protected Attributes
T	sum_
T	compensation_

Detailed Description

template<typename T>
class TNumericUtil::KahanAccumulator< T >

Definition at line 27 of file MELAAccumulators.h.

Constructor & Destructor Documentation

KahanAccumulator() [1/3]

template<typename T >

TNumericUtil::KahanAccumulator< T >::KahanAccumulator ( )

inline

Definition at line 31 of file MELAAccumulators.h.

: sum_(0), compensation_(0) {}

KahanAccumulator() [2/3]

template<typename T >

TNumericUtil::KahanAccumulator< T >::KahanAccumulator ( const T &  value )

inline

Definition at line 32 of file MELAAccumulators.h.

: sum_(value), compensation_(0) {}

KahanAccumulator() [3/3]

template<typename T >

TNumericUtil::KahanAccumulator< T >::KahanAccumulator ( const KahanAccumulator< T > &  other )

inline

Definition at line 33 of file MELAAccumulators.h.

: sum_(other.sum_), compensation_(other.compensation_){}

Member Function Documentation

operator T()

template<typename T >

TNumericUtil::KahanAccumulator< T >::operator T ( ) const

inline

Definition at line 50 of file MELAAccumulators.h.

{ return sum_; }

operator*()

template<typename T >

KahanAccumulator TNumericUtil::KahanAccumulator< T >::operator* ( const T &  inc )

inline

Definition at line 47 of file MELAAccumulators.h.

{ KahanAccumulator<T> tmp(*this);  tmp *= inc; return tmp; }

operator*=()

template<typename T >

KahanAccumulator& TNumericUtil::KahanAccumulator< T >::operator*= ( const T &  inc )

inline

Definition at line 43 of file MELAAccumulators.h.

{ sum_ *= inc; compensation_ *= inc; return *this; }

operator+()

template<typename T >

KahanAccumulator TNumericUtil::KahanAccumulator< T >::operator+ ( const T &  inc )

inline

Definition at line 45 of file MELAAccumulators.h.

{ KahanAccumulator<T> tmp(*this);  tmp += inc; return tmp; }

operator+=()

template<typename T >

KahanAccumulator& TNumericUtil::KahanAccumulator< T >::operator+= ( const T &  inc )

inline

Definition at line 34 of file MELAAccumulators.h.

                                              {
      T y = inc - compensation_;
      T sumnew = sum_ + y;
      T sumerr = (sumnew - sum_);
      compensation_ = sumerr - y;
      sum_ = sumnew;
      return *this;
    }

operator-()

template<typename T >

KahanAccumulator TNumericUtil::KahanAccumulator< T >::operator- ( const T &  inc )

inline

Definition at line 46 of file MELAAccumulators.h.

{ KahanAccumulator<T> tmp(*this);  tmp -= inc; return tmp; }

operator-=()

template<typename T >

KahanAccumulator& TNumericUtil::KahanAccumulator< T >::operator-= ( const T &  inc )

inline

Definition at line 42 of file MELAAccumulators.h.

{ this->operator+=(-inc); return *this; }

operator/()

template<typename T >

KahanAccumulator TNumericUtil::KahanAccumulator< T >::operator/ ( const T &  inc )

inline

Definition at line 48 of file MELAAccumulators.h.

{ KahanAccumulator<T> tmp(*this);  tmp /= inc; return tmp; }

operator/=()

template<typename T >

KahanAccumulator& TNumericUtil::KahanAccumulator< T >::operator/= ( const T &  inc )

inline

Definition at line 44 of file MELAAccumulators.h.

{ sum_ /= inc; compensation_ /= inc; return *this; }

sum()

template<typename T >

T TNumericUtil::KahanAccumulator< T >::sum ( ) const

inline

Definition at line 49 of file MELAAccumulators.h.

{ return sum_; }

Member Data Documentation

compensation_

template<typename T >

T TNumericUtil::KahanAccumulator< T >::compensation_

protected

Definition at line 29 of file MELAAccumulators.h.

sum_

template<typename T >

T TNumericUtil::KahanAccumulator< T >::sum_

protected

Definition at line 29 of file MELAAccumulators.h.

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The documentation for this class was generated from the following file:

• MELA/interface/MELAAccumulators.h