/**
 * Componentwise checks if given 2D vector is `NaN` and writes results to
 * boolean output vector. If `out` is null, creates a new result vector.
 * Multi-method.
 *
 * @param o - output vector
 * @param a - input vector
 */
export declare const isNaN: import("./api.js").MultiVecOpV<number, boolean>;
/**
 * Componentwise checks if given 2D vector is `NaN` and writes results to
 * boolean output vector. If `out` is null, creates a new result vector.
 *
 * @param o - output vector
 * @param a - input vector
 */
export declare const isNaN2: import("./api.js").VecOpV<number, boolean>;
/**
 * Componentwise checks if given 3D vector is `NaN` and writes results to
 * boolean output vector. If `out` is null, creates a new result vector.
 *
 * @param o - output vector
 * @param a - input vector
 */
export declare const isNaN3: import("./api.js").VecOpV<number, boolean>;
/**
 * Componentwise checks if given 4D vector is `NaN` and writes results to
 * boolean output vector. If `out` is null, creates a new result vector.
 *
 * @param o - output vector
 * @param a - input vector
 */
export declare const isNaN4: import("./api.js").VecOpV<number, boolean>;
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