Function sp_consensus_sassafras::ticket::ticket_id_threshold

pub fn ticket_id_threshold(
    redundancy: u32,
    slots: u32,
    attempts: u32,
    validators: u32,
) -> TicketId

Computes a boundary for TicketId maximum allowed value for a given epoch.

Only ticket identifiers below this threshold should be considered as candidates for slot assignment.

The value is computed as TicketId::MAX*(redundancy*slots)/(attempts*validators)

Where:

• redundancy: redundancy factor;
• slots: number of slots in epoch;
• attempts: max number of tickets attempts per validator;
• validators: number of validators in epoch.

If attempts * validators = 0 then we return 0.

For details about the formula and implications refer to probabilities an parameters paragraph of the w3f introduction to the protocol.