sc::op Namespace Reference

Classes
struct	Op_
struct	Product
struct	Sum
struct	SumSquare

Typedefs
using	Op = Op_< std::function< void(double &, double)>, double >
using	kOp = Op_< std::function< void(KahanSum &, double)>, KahanSum >

Functions
void	sumNeumanierNormal (double &sum, double &err, const double &value)
	Performs one step of the Neumanier sum between doubles Overwrites the summand and error @parma sum. More...
void	fkOpSum (KahanSum &rAccum, double fVal)
void	fkOpSumSquare (KahanSum &rAccum, double fVal)
KahanSum	executeSSE2 (size_t &i, size_t nSize, const double *pCurrent)
static KahanSum	executeUnrolled (size_t &i, size_t nSize, const double *pCurrent)
	If no boosts available, Unrolled KahanSum. More...
static KahanSum	executeFast (size_t &i, size_t nSize, const double *pCurrent)
	This function task is to choose the fastest method available to perform the sum. More...
KahanSum	sumArray (const double *pArray, size_t nSize)
	Performs the sum of an array. More...

Variables
kOp	kOpSum (0.0, fkOpSum)
kOp	kOpSumSquare (0.0, fkOpSumSquare)
std::vector< kOp >	kOpSumAndSumSquare = { kOpSum, kOpSumSquare }

Typedef Documentation

kOp

using sc::op::kOp = typedef Op_<std::function<void(KahanSum&, double)>, KahanSum>

Definition at line 37 of file matrixoperators.hxx.

Op

using sc::op::Op = typedef Op_<std::function<void(double&, double)>, double>

Definition at line 36 of file matrixoperators.hxx.

Function Documentation

executeFast()

static KahanSum sc::op::executeFast ( size_t &  i, size_t  nSize, const double *  pCurrent  )

inlinestatic

This function task is to choose the fastest method available to perform the sum.

Parameters

i
nSize
pCurrent

Definition at line 70 of file arraysumfunctor.hxx.

References executeSSE2(), executeUnrolled(), and i.

Referenced by sumArray().

executeSSE2()

KahanSum sc::op::executeSSE2	(	size_t &	i,
		size_t	nSize,
		const double *	pCurrent
	)

Referenced by executeFast().

executeUnrolled()

static KahanSum sc::op::executeUnrolled ( size_t &  i, size_t  nSize, const double *  pCurrent  )

inlinestatic

If no boosts available, Unrolled KahanSum.

Most likely to use on android.

Definition at line 39 of file arraysumfunctor.hxx.

References i.

Referenced by executeFast().

fkOpSum()

void sc::op::fkOpSum	(	KahanSum &	rAccum,
		double	fVal
	)

Definition at line 30 of file matrixoperators.cxx.

fkOpSumSquare()

void sc::op::fkOpSumSquare	(	KahanSum &	rAccum,
		double	fVal
	)

Definition at line 34 of file matrixoperators.cxx.

sumArray()

KahanSum sc::op::sumArray ( const double *  pArray, size_t  nSize  )

inline

Performs the sum of an array.

Note that align 16 will speed up the process.

Parameters

pArray
nSize

Definition at line 85 of file arraysumfunctor.hxx.

References executeFast(), KahanSum::get(), GetDoubleErrorValue(), and i.

sumNeumanierNormal()

void sc::op::sumNeumanierNormal ( double &  sum, double &  err, const double &  value  )

inline

Performs one step of the Neumanier sum between doubles Overwrites the summand and error @parma sum.

Parameters

err
value

Definition at line 24 of file arraysum.hxx.

References err, t, and value.

Variable Documentation

kOpSum

kOp sc::op::kOpSum	(	0.	0,
		fkOpSum
	)

Definition at line 42 of file matrixoperators.hxx.

kOpSumAndSumSquare

std::vector< kOp > sc::op::kOpSumAndSumSquare = { kOpSum, kOpSumSquare }

Definition at line 38 of file matrixoperators.cxx.

Referenced by ScInterpreter::ScFTest().

kOpSumSquare

kOp sc::op::kOpSumSquare	(	0.	0,
		fkOpSumSquare
	)

Definition at line 43 of file matrixoperators.hxx.