Struct ObjectiveScalingInfo 

pub struct ObjectiveScalingInfo {
    pub factor: Option<f64>,
    pub total_factor: Option<f64>,
    pub start_gradient_max: Option<f64>,
    pub certificate_refused: bool,
    pub acceptable_certificate_refused: bool,
}

The objective-scaling decision (gh#990 item 13).

Fields

factor: Option<f64>

The solver-computed objective scaling factor the run ended with (excluding the caller’s own obj_scaling_factor); 1 when none was applied.

total_factor: Option<f64>

gh#1001. |obj_scaling_factor · factor · audit upscale|: the whole multiplier on the objective the returned run’s IPM minimized, so statistics.final_scaled_objective and each iteration’s mu are in units of total_factor · f. Differs from factor when the caller set obj_scaling_factor or the gh#983 audit re-solved with the objective scaled up.

start_gradient_max: Option<f64>

max |grad f| at the starting point, as gradient-based scaling measured it.

certificate_refused: bool

A strict termination certificate was refused because the objective scaling masked it (gh#200), and the solve kept iterating.

acceptable_certificate_refused: bool

Same, for an acceptable-level certificate.

Trait Implementations

impl Clone for ObjectiveScalingInfo

fn clone(&self) -> ObjectiveScalingInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObjectiveScalingInfo

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ObjectiveScalingInfo

fn deserialize<__D>( __deserializer: __D, ) -> Result<ObjectiveScalingInfo, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ObjectiveScalingInfo

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.