Polynomial_math

An useful math tool to deal with polynomial problems.

Prerequisites

These tools depend on Eigen modules. You'd better install Eigen3 in advance.

sudo apt-get install libeigen3-dev

The namespace is polynomial now, change it if necessary.

Functions

• overload additon +
• overload substraction -
• overload multiplication *
• overload equal =
• overload ==
• get the cofficients coefficients
• evaluaiton eval()
• rooting findRoots()
• get the degree getDegree

Test

• Download the source code by git clone in your terminal

  git clone http://github.com/hannbusann/Polynomial_math

• Compile the testpolynomial.cpp using cmake

  mkdir build
  cd build
  cmake ..
  make
  

• Execute the executable file, and view the outputs.

  ./testpolynomial
  	They are the same!
      5
      5
      *** Polynomial algebra test ***
      a: [1 2 3 4 5 6]
      b: [1 2 3 4 5]
      a+b: [ 1  3  5  7  9 11]
      a-b: [1 1 1 1 1 1]
      a*b: [ 1  4 10 20 35 50 58 58 49 30]
      a(5): 4881
  
      *** Polynomial roots test ***
      c: [-0.8049  -0.443  0.0938   0.915  0.9298]
      roots using sturm sequences:
      c(-0.88849): 8.71792e-08