KahanSum Struct Reference

Public Member Functions
void	add (double value)
double	result () const

Public Attributes
double	sum = 0.0
double	correction = 0.0

Detailed Description

Definition at line 23 of file ApplyWeights.cpp.

Member Function Documentation

add()

void KahanSum::add ( double  value )

inline

Definition at line 28 of file ApplyWeights.cpp.

    {
        double y   = value - correction;  // Correct the input
        double t   = sum + y;             // Perform the sum
        correction = ( t - sum ) - y;     // Update correction
        sum        = t;                   // Store the new sum
    }

References correction, and sum.

Referenced by deterministicSparseMatVecMulKahan(), and pairwiseKahanSum().

result()

double KahanSum::result ( ) const

inline

Definition at line 36 of file ApplyWeights.cpp.

    {
        return sum;
    }

References sum.

Referenced by deterministicSparseMatVecMulKahan(), and pairwiseKahanSum().

Member Data Documentation

correction

double KahanSum::correction = 0.0

Definition at line 26 of file ApplyWeights.cpp.

Referenced by add().

sum

double KahanSum::sum = 0.0

Definition at line 25 of file ApplyWeights.cpp.

Referenced by add(), and result().

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

• ApplyWeights.cpp