truncate()

SRDef syten::BTT::State::truncate	(	Truncation const &	trunc = Truncation(),
		State::DropNorm const	dropN = DropNorm::Yes
	)

Truncates the state.

See truncate_rec() for a detailed discussion of the algorithm.

Parameters

trunc	Truncation specification
dropN	if true, drop the norm on both normalisation sweep

Returns

the total incurred error during truncations or NAN if the new state is 0

References drop_unmatched(), syten::isnan(), syten::BinaryTree::Tree< Cached< Tensor< 4 > > >::r, rnorm(), and truncate_rec().

Referenced by syten::BTT::RandomState::generateCompleteState(), syten::BTT::RandomState::generateNearVacuumState(), and truncateKeepNorm().

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