expand() [1/2]

std::tuple< STensor, SBasis > syten::STensorImpl::expand	(	STensor const &	a,
		STensor const &	b
	)

Constructs an expanded tensor in which a is placed first and b is placed second.

All shared bases of a and b are taken to be identical and only one other basis is allowed in a and b each. Those legs are matched together.

Remarks

This function is not autodifferentiable.

References syten::STensorImpl::STensor::autodiff_enabled(), syten::STensorImpl::STensor::b(), expand(), syten::STensorImpl::STensor::get_bases(), std::move(), syten::STensorImpl::STensor::rank(), and SYTEN_ASSERT_MSG.

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