Enum Variability 

pub enum Variability {
    Constant,
    Fixed,
    Tunable,
    Discrete,
    Continuous,
}

Enumeration that defines the time dependency of the variable, in other words, it defines the time instants when a variable may be changed by the importer or may change its value due to FMU internal computations, depending on their causality.

See [https://fmi-standard.org/docs/3.0.1/#variability]

Variants

Constant

The value of the variable never changes.

Fixed

The value of the variable is fixed in super state Initialized, in other words, after [exit_initialization_mode()] was called the variable value does not change anymore. The default for variables of causality Causality::Parameter, [Causality::StructuredParameter] or Causality::CalculatedParameter is Fixed.

Tunable

The value of the variable is constant between events (ME and CS if Event Mode is supported) and between communication points (CS and SE). A parameter with variability = tunable may be changed only in Event Mode or, if Event Mode is not supported, at communication points (CS and SE).

Discrete

• Model Exchange: The value of the variable may change only in Event Mode.
• Co-Simulation: If Event Mode is used (see event_mode_used), the value of the variable may only change in Event Mode. If Event Mode is not used, the value may change at communication points and the FMU must detect and handle such events internally. During Intermediate Update Mode, discrete variables are not allowed to change.
• Scheduled Execution: The value may change only at communication points.

Continuous

Only variables of type FmiFloat32or FmiFloat64 may be continuous. The default for variables of type FmiFloat32 and FmiFloat64 and causality other than Causality::Parameter, [Causality::StructuredParameter] or Causality::CalculatedParameter is continuous. Variables with variability continuous may change in Initialization Mode and in super state Initialized.

Trait Implementations

impl Clone for Variability

fn clone(&self) -> Variability

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Variability

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Variability

fn default() -> Variability

Returns the “default value” for a type.

impl PartialEq for Variability

fn eq(&self, other: &Variability) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl YaDeserialize for Variability

fn deserialize<R: Read>(reader: &mut Deserializer<R>) -> Result<Self, String>

impl YaSerialize for Variability

fn serialize<W: Write>(&self, writer: &mut Serializer<W>) -> Result<(), String>

fn serialize_attributes( &self, source_attributes: Vec<OwnedAttribute>, source_namespace: Namespace, ) -> Result<(Vec<OwnedAttribute>, Namespace), String>

impl Copy for Variability

impl StructuralPartialEq for Variability