Trait polkadot_sdk_frame::runtime::prelude::weights::WeightToFeePolynomial

pub trait WeightToFeePolynomial {
    type Balance: BaseArithmetic + From<u32> + Copy + Unsigned;

    // Required method
    fn polynomial() -> SmallVec<[WeightToFeeCoefficient<Self::Balance>; 4]>;
}

A trait that describes the weight to fee calculation as polynomial.

An implementor should only implement the polynomial function.

Required Associated Types

type Balance: BaseArithmetic + From<u32> + Copy + Unsigned

The type that is returned as result from polynomial evaluation.

Required Methods

fn polynomial() -> SmallVec<[WeightToFeeCoefficient<Self::Balance>; 4]>

Returns a polynomial that describes the weight to fee conversion.

This is the only function that should be manually implemented. Please note that all calculation is done in the probably unsigned Balance type. This means that the order of coefficients is important as putting the negative coefficients first will most likely saturate the result to zero mid evaluation.

Object Safety

This trait is not object safe.

Implementors