checkNormAndStabilise()

void syten::T3N::DMRG::Run::checkNormAndStabilise ( STensor &  t, Vec< SBasisId > const &  keep_size = {}  )

private

Checks the norm of a tensor and randomises it if needed.

Parameters

t	The tensor.
keep_size	Keeps the input size on these legs if randomisation necessary.

References std::vector< T >::begin(), std::count(), std::vector< T >::end(), syten::logGE(), syten::logGW(), syten::STensorImpl::randomise_blocks(), std::vector< T >::size(), syten::STensorImpl::snorm(), SYTEN_ZNORM_THRESHOLD, and syten::underThreshold().

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