import type { VecOpV } from "./api.js";
/**
 * 2D only. Produces a perpendicular vector to `v`, i.e. `[-y,x]`.
 * Assumes positive Y-up.
 *
 * @param out -
 * @param v -
 */
export declare const perpendicularCCW: VecOpV;
/**
 * 2D only. Produces a clockwise perpendicular vector to `v`, i.e.
 * `[y,-x]`. Assumes positive Y-up.
 *
 * @param out -
 * @param v -
 */
export declare const perpendicularCW: VecOpV;
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