/**
 * Kaiser Bessel Function of third kind (BesselJ(3,x))
 * NOTE: this is an approximation, if input value is sufficiently large - results will be way off
 * This is a Tylor series approximation
 * @see https://www.shadertoy.com/view/wlf3RH
 * @returns {number}
 * @param {number} x
 */
export function bessel_3(x: number): number;
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