Impala Documentation

template<class ArrayT>

void Impala::Core::Vector::Sum	(	typename VectorSet< ArrayT >::VectorT *	dst,
		VectorSet< ArrayT > *	src,
		int	startIdx,
		int	stepSize,
		int	nrSteps
	)			`[inline]`

Definition at line 30 of file Sum.h.

References AddAssign(), Impala::Core::Vector::VectorSet< ArrayT >::GetVector(), Impala::Core::Vector::VectorSet< ArrayT >::GetVectorLength(), and Impala::Core::Vector::VectorSet< ArrayT >::HasConstVectorSize().

00032 {
00033     typedef typename VectorSet<ArrayT>::VectorT VectorT;
00034 
00035     if (!src->HasConstVectorSize())
00036     {
00037         std::cout << "Vector::Sum: works for constant vector size only" << std::endl;
00038         return;
00039     }
00040     VectorT res(src->GetVectorLength(0));
00041     res = 0;
00042     int endIdx = startIdx + nrSteps * stepSize;
00043     for (int i=startIdx ; i<endIdx ; i+=stepSize)
00044         AddAssign(res, src->GetVector(i, true));
00045     if (!dst)
00046         dst = new VectorT(res);
00047     else
00048         *dst = res;
00049 }

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