/**
 * Componentwise nD vector subtraction. Multi-method.
 *
 * @param o - output vector
 * @param a - input vector
 * @param b - input vector
 */
export declare const sub: import("./api.js").MultiVecOpVV<number>;
/**
 * Componentwise 2D vector subtraction.
 *
 * @param o - output vector
 * @param a - input vector
 * @param b - input vector
 */
export declare const sub2: import("./api.js").VecOpVV<number>;
/**
 * Componentwise 3D vector subtraction.
 *
 * @param o - output vector
 * @param a - input vector
 * @param b - input vector
 */
export declare const sub3: import("./api.js").VecOpVV<number>;
/**
 * Componentwise 4D vector subtraction.
 *
 * @param o - output vector
 * @param a - input vector
 * @param b - input vector
 */
export declare const sub4: import("./api.js").VecOpVV<number>;
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