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

A practical, root-focused JavaScript polynomial utility library.

/**
 * Returns true if two polynomials are exactly equal by comparing coefficients,
 * false otherwise.
 * 
 * @param a 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`
 * @param b another polynomial 
 * 
 * @example
 * ```typescript
 * bEqual([1n,2n,3n,4n], [1n,2n,3n,4n]);   //=> true
 * bEqual([1n,2n,3n,4n], [1n,2n,3n,4n,5n]); //=> false
 * ```
 * 
 * @doc
 */
function bEqual(a: bigint[], b: bigint[]): boolean {
	if (a.length !== b.length) { 
		return false; 
	}

	for (let i=0; i<a.length; i++) {
		if (a[i] !== b[i]) { 
			return false; 
		}
	}

	return true;
}


export { bEqual }