export declare function hashU32(a: number): number;
export declare function readU64(b: Uint8Array, n: number): number;
export declare function readU32(b: Uint8Array, n: number): number;
export declare function writeU32(b: Uint8Array, n: number, x: number): void;
export declare function imul(a: number, b: number): number;
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