/**
 * Hamming weight.
 *
 * Taken from: http://jsperf.com/hamming-weight
 */
export declare function popcount(x: number): number;
export declare function hashFragment(shift: number, h: number): number;
export declare function toBitmap(x: number): number;
export declare function fromBitmap(bitmap: number, bit: number): number;
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