/**
 * Bessel first order function of zeroth order
 * @see https://link.springer.com/article/10.1007/s40314-020-01238-z
 * @see https://www.shadertoy.com/view/Wt3czM
 * @param {number} x
 * @return {number}
 */
export function bessel_j0(x: number): number;
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