export declare const kLog2Table: Float64Array<ArrayBuffer>;
export declare function log2FloorNonZero(n: number): number;
export declare function fastLog2(v: number): number;
export declare function bitsEntropy(histogram: Uint32Array, total: number): number;
export declare function populationCost(histogram: Uint32Array): number;
export declare function extraBits(base: number, value: number): number;
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