uni20::krylov::KrylovExponentialParams< Scalar > Struct Template Reference

Parameters for Krylov exponential actions. More...

#include <krylov_exponential.hpp>

Collaboration diagram for uni20::krylov::KrylovExponentialParams< Scalar >:

Public Attributes
bool	assume_nonexpansive = false
	Permit adaptive acceptance for Hermitian actions not known automatically to be unitary.
Scalar	breakdown_tolerance = Scalar{}
	Absolute threshold for invariant-subspace breakdown; zero selects a machine default.
KrylovDiagnosticsLevel	diagnostics = KrylovDiagnosticsLevel::None
	Optional diagnostic retention level.
Scalar	estimate_safety_factor = Scalar{1}
	Multiplier applied to the error estimate before comparing with the target.
int	krylov_dimension = 0
	Fixed projection dimension, or adaptive maximum when relative_tolerance > 0.
int	minimum_krylov_dimension = 0
	Minimum projection dimension before adaptive acceptance; zero selects 1.
Scalar	relative_tolerance = Scalar{}
	Relative error target for nonexpansive Hermitian actions; zero keeps fixed-dimension mode.
bool	throw_on_nonconvergence = true
	Throw if adaptive Hermitian acceptance does not reach the requested tolerance.

Detailed Description

template<uni20::Real Scalar>
struct uni20::krylov::KrylovExponentialParams< Scalar >

Parameters for Krylov exponential actions.

Template Parameters

Scalar

Real scalar type used for tolerances and the time parameter.

Member Data Documentation

assume_nonexpansive

template<uni20::Real Scalar>

bool uni20::krylov::KrylovExponentialParams< Scalar >::assume_nonexpansive = false

Permit adaptive acceptance for Hermitian actions not known automatically to be unitary.

breakdown_tolerance

template<uni20::Real Scalar>

Scalar uni20::krylov::KrylovExponentialParams< Scalar >::breakdown_tolerance = Scalar{}

Absolute threshold for invariant-subspace breakdown; zero selects a machine default.

diagnostics

template<uni20::Real Scalar>

KrylovDiagnosticsLevel uni20::krylov::KrylovExponentialParams< Scalar >::diagnostics = KrylovDiagnosticsLevel::None

Optional diagnostic retention level.

estimate_safety_factor

template<uni20::Real Scalar>

Scalar uni20::krylov::KrylovExponentialParams< Scalar >::estimate_safety_factor = Scalar{1}

Multiplier applied to the error estimate before comparing with the target.

krylov_dimension

template<uni20::Real Scalar>

int uni20::krylov::KrylovExponentialParams< Scalar >::krylov_dimension = 0

Fixed projection dimension, or adaptive maximum when relative_tolerance > 0.

minimum_krylov_dimension

template<uni20::Real Scalar>

int uni20::krylov::KrylovExponentialParams< Scalar >::minimum_krylov_dimension = 0

Minimum projection dimension before adaptive acceptance; zero selects 1.

relative_tolerance

template<uni20::Real Scalar>

Scalar uni20::krylov::KrylovExponentialParams< Scalar >::relative_tolerance = Scalar{}

Relative error target for nonexpansive Hermitian actions; zero keeps fixed-dimension mode.

throw_on_nonconvergence

template<uni20::Real Scalar>

bool uni20::krylov::KrylovExponentialParams< Scalar >::throw_on_nonconvergence = true

Throw if adaptive Hermitian acceptance does not reach the requested tolerance.

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The documentation for this struct was generated from the following file:

• krylov_exponential.hpp