factor

README

factor

A library for manipulating polynomials. Includes a command-line tool for factoring as well.

Installation:

Library:

go get github.com/noah-friedman/factor

Command-Line Tool:

go get github.com/noah-friedman/factor/cmd/factor

NOTE: Make sure $GOPATH/bin is in the system path.

Documentation

Overview

Define the polynomial type and functions related to it.

Index

• type Polynomial
  • func (p Polynomial) Degree() int
  • func (p Polynomial) F(x float64) float64

Examples

• Polynomial.Degree

Types

type Polynomial

type Polynomial struct {
	// The coefficients for each term of the polynomial. The coefficients should be provided for each term ascending (e.g. 3x² + 7x + 9 -> 9, 7, 3).
	Coefficients []float64
}

A type that represents a polynomial function. It contains the information of it's coefficients, and has a method that will return the value of the function with a specific 'x' value (i.e. 'f(x)').

func (Polynomial) Degree

func (p Polynomial) Degree() int

Calculate the degree of the Polynomial.

Example

package main

import (
	"fmt"
	"github.com/noah-friedman/factor"
)

func main() {
	p := factor.Polynomial{Coefficients: []float64{1, 2, 3, 4}}

	degree := p.Degree()
	fmt.Print(degree)
}

Output:

3

func (Polynomial) F

func (p Polynomial) F(x float64) float64

Calculate the value of the Polynomial function at a specific 'x' value. Rounded to 5 decimal places.