Belos::CGIterationState::Z() Belos::GmresIterationState::Z() Belos::PCPGIterState::Z() Belos::PseudoBlockGmresIterState::Z() Belos::GmresIterationState::z() Belos::RCGIterState::z()

Teuchos::OrdinalTraits::zero() Teuchos::ScalarTraits::zero()