flo-poly/src/basic/double/negate.ts

A practical, root-focused JavaScript polynomial utility library.

/**
 * Returns the negative of the given polynomial (p -> -p).
 * 
 * @param p a polynomial with coefficients given densely as an array of double
 * floating point numbers from highest to lowest power, e.g. `[5,-3,0]` 
 * represents the polynomial `5x^2 - 3x`
 * @example
 * ```typescript
 * negate([0.1, -0.2]); //=> [-0.1, 0.2]
 * ```
 * 
 * @doc
 */
function negate(p: number[]): number[] {
	const p_: number[] = [];
	for (let i=0; i<p.length; i++) {
		p_.push(-p[i]);
	}

	return p_;
}


export { negate }