frame_plugins::rewards::payout

Struct ExpDecayPayoutConfig

Source 
pub struct ExpDecayPayoutConfig<T, F>
where
    F: FixedPointNumber,
{
    pub initial_reward: T,
    pub decay_constant: F,
}
Expand description

Defines the configuration for the ExpDecayPayout model.

This struct specifies the parameters for an exponential decay reward function, where rewards decrease continuously over time.

Concept: Continuous Exponential Decay

Rewards follow a smooth exponential decay curve:

reward = r0 * e^(-a * x)

where:

  • r0 = initial reward
  • a = decay constant (rate of decay, a > 0)
  • x = input variable (e.g., time, era, or block index)

This model enables:

  • Smooth reward reduction over time
  • More natural decay compared to discrete halving
  • Fine-grained control over emission rate

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§initial_reward: T

Initial reward (r0): reward at x = 0

§decay_constant: F

Decay constant (a): controls how fast rewards decrease

Trait Implementations§

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impl<FixedPoint, Asset> PurePluginModel<Asset, ExpDecayPayoutConfig<Asset, FixedPoint>, Asset> for ExpDecayPayout
where Asset: Copy + IntegerToFixed + FixedForInteger<FixedPoint = FixedPoint>, FixedPoint: FixedPointNumber + FixedSignedCast<Signed = FixedI128>,

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fn compute( &self, x: Asset, context: &ExpDecayPayoutConfig<Asset, FixedPoint>, ) -> Asset

Computes the model’s output for a given immutable input and context.

Auto Trait Implementations§

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impl<T, F> Freeze for ExpDecayPayoutConfig<T, F>
where T: Freeze, F: Freeze,

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impl<T, F> RefUnwindSafe for ExpDecayPayoutConfig<T, F>
where T: RefUnwindSafe, F: RefUnwindSafe,

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impl<T, F> Send for ExpDecayPayoutConfig<T, F>
where T: Send, F: Send,

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impl<T, F> Sync for ExpDecayPayoutConfig<T, F>
where T: Sync, F: Sync,

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impl<T, F> Unpin for ExpDecayPayoutConfig<T, F>
where T: Unpin, F: Unpin,

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impl<T, F> UnwindSafe for ExpDecayPayoutConfig<T, F>
where T: UnwindSafe, F: UnwindSafe,

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