isParallel() [2/2]

template<Rank rank, typename Scalar >

std::tuple< ParallelKind, Scalar, Scalar > syten::isParallel ( SparseTensor< rank, Scalar > const &  a, SparseTensor< rank, Scalar > const &  b  )

inline

Checks if two tensors are parallel, i.e. $a_i = c \; b_i \quad \forall i$.

Parameters

a	first tensor
b	second tensor

Returns

a tuple {ParallelKind, c_nominator, c_denominator}

The second tensor multiplied by $c$ will give the first tensor if the two tensors are parallel.

References syten::SparseTensor< rank, Scalar >::dim(), syten::SparseTensor< rank, Scalar >::isSingleton(), std::make_tuple(), SYTEN_ASSERT, and syten::SparseTensor< rank, Scalar >::valSingleton().

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