import { CuringFormState } from './types';
/**
 * SPT weighted total per IRS rule: `⌊cy⌋ + ⌊py / 3⌋ + ⌊tpy / 6⌋`.
 * Floor-division per term; whole-integer output.
 *
 * Short-circuits when the current-year day count falls under the 31-day
 * IRS floor: at that point the prior-year inputs are hidden in the UI
 * (TAXDOC-1351) and the user cannot meet SPT regardless of their values,
 * so the helper returns just `cy` rather than reading stale day counts
 * left over from a previous state. This keeps `isValid` honest (no
 * silent-stuck submit gate) and keeps the `weighted_total` wire field
 * aligned with what the user can actually see.
 *
 * Shared between `useCuringState` (so descriptors and the UI can read it
 * from `state.derived.sptWeightedTotal`) and `useTaxbitCuring` (so the
 * submit hook can build `weighted_total` into the multipart payload
 * without re-implementing the formula).
 */
export declare const computeSptWeightedTotal: (fields: CuringFormState) => number;