variance() [1/2]

template<typename S >

std::pair< SDef, SRDef > syten::MPS::variance	(	S &&	a,
		Operator const &	op,
		S &&	b,
		SDef	norm = NAN
	)

Calculates the expectation value and the variance.

References syten::abs(), expectation(), std::isnan(), norm(), overlap(), and sqaure_expectation().

Referenced by syten::calc_expval(), syten::do_expval(), and variance().

Here is the call graph for this function:

Here is the caller graph for this function: