Evaluates polynomials using Horner's rule.
First install via npm:
npm install horner
Then you can use it as follows:
var horner = require"horner"//Example: Evaluate the polynomial 1 + 2 * x^2 at x = 2console.loghorner1 0 2 2.0//Prints: 9//Example: Evaluate a complex polynomial//// 2 - 3i * x + (4 + 5i)*x^2//// At x = 1+2iconsole.loghorner2 0 4 //Real coefficients0 -3 5 //Imaginary coefficients1 2//Prints: [-24,-2]
Evaluates the polynomial at the point z
polyis the coefficients of the polynomial arranged in increasing degree. If complex, is a pair of arrays, the first representing the real coefficients and the second representing the imaginary coefficients.
zis the point to evaluate the polynomial at. Either a scalar for a real valued function or a pair for a complex number.
Returns: A scalar for real results, a pair for complex results
(c) 2013 Mikola Lysenko. MIT License