flo-poly/src/evaluate/bigint/b-evaluate-at-0.ts

A practical, root-focused JavaScript polynomial utility library.

/** 
 * Returns the constant term of the given polynomial.
 * 
 * @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
 * bEvaluateAt0([3n,2n,99n]); //=> 99n
 * ```
 * 
 * @doc
 */
function bEvaluateAt0(p: bigint[]): bigint {
	return p.length === 0 ? 0n : p[p.length-1];
}


export { bEvaluateAt0 }