von_neumann_entropy()

SRDef syten::von_neumann_entropy

(

Tensor< 2 > const &

s

)

Calculates the von Neumann entropy \( \sum_i s_{ii}^2 \mathrm{log}(s_{ii}^2) \).

References syten::STensorImpl::log2(), overThreshold(), std::pow(), real(), SYTEN_ASSERT, and SYTEN_ZERO_THRESHOLD.

Referenced by syten::Pyten::init_tensor().

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