flo-poly/src/basic/bigint/b-invert.ts

A practical, root-focused JavaScript polynomial utility library.

/**
 * Inverts the given polynomial by reversing the order of the coefficients, 
 * i.e. p(x) -> x^deg(p) * p(1/x)
 * 
 * @param p a polynomial with coefficients given densely as an array of
 * bigints from highest to lowest power, e.g. `[5n,-3n,0n]` represents the 
 * polynomial `5x^2 - 3x`
 * 
 * @example
 * ```typescript
 * bInvert([3n,2n,-5n]);  // => [-5n,2n,3n]
 * ```
 * 
 * @doc
 */
function bInvert(p: bigint[]): bigint[] {
	return p.slice().reverse();
}


export { bInvert }