export declare function zeros(x: number): number[];
export declare function zerosM(x: number, y: number): number[][];
export declare function norm2(a: number[]): number;
export declare function scale(ret: number[], value: number[], c: number): void;
export declare function weightedSum(ret: number[], w1: number, v1: number[], w2: number, v2: number[]): void;
export declare function gemv(output: number[], A: number[][], x: number[]): void;