sort_VecIdx_single()

template<Rank rank>

std::vector<std::vector<Index> > syten::TensorBlocks::sort_VecIdx_single	(	Tensor< rank > const &	input,
		Index const	leg
	)

Sort the blocks of the supplied tensor into buckets corresponding to the specified leg.

Parameters

input	tensor with blocks to sort
leg	leg of the tensor, blocks are sorted such that those transforming the same on that leg are in the same bucket

Returns

a vector of buckets, where each bucket is a vector of indices of the blocks of the input tensor.

References syten::Tensor< rank >::begin(), std::copy(), syten::Tensor< rank >::empty(), std::iota(), std::min_element(), std::partition_point(), std::vector< T >::reserve(), syten::Tensor< rank >::size(), and std::sort().

Referenced by syten::tensorSortBuckets().

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