/**
 * @file src/tableau/backup.ts
 * @description Tableau state backup and restoration
 *
 * Provides functions to snapshot and restore tableau state during
 * branch-and-bound exploration. Essential for backtracking when
 * a branch is pruned or found infeasible.
 *
 * Functions are designed to be bound to a Tableau instance via `this`.
 */
import type Tableau from "./tableau";
export declare function copy(this: Tableau): Tableau;
export declare function save(this: Tableau): void;
export declare function restore(this: Tableau): void;