ts-useful/lib/commonjs/sigma.d.ts

Functions for animation, color transitions, ecliptic, bezier, decasteljau, curves, three dimensional curves, smooth scrolling, random range, randomItem, mobius index, vectors, physics vectors, and easing.

/**
 *
 * @param num
 * @param index
 * @param x
 * @returns number
 */
export declare const sigma: (num: number, index: number, x?: number) => number;