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61 lines
1.4 KiB
61 lines
1.4 KiB
#ifndef POLYNOMIAL_HPP
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#define POLYNOMIAL_HPP
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#include "../AttractorKernel.hpp"
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inline unsigned int calculateNumberOfParameters(const unsigned int dimension, const unsigned int orde) {
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double n_coef = orde + 1;
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for(unsigned int i = 2; i <= dimension; i++) {
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n_coef = n_coef*(orde + i)/(i - 1);
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}
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const unsigned int output = (unsigned int) n_coef;
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return output;
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}
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class Polynomial : public AttractorKernel {
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private:
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unsigned int orde;
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void recur(unsigned int curr_dimension, unsigned int prev_i, unsigned int n, unsigned int& m, double prev_product=1.0) {
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double product;
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for(unsigned int i = prev_i; i < dimension; i++) {
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product = prev_product * vectorOld[i];
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vectorNew[curr_dimension] += parameters[m] * product;
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m++;
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if(n < orde) {
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recur(curr_dimension, i, n+1, m, product);
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}
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}
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}
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public:
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Polynomial():
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AttractorKernel(3, calculateNumberOfParameters(3, 2)), orde(2) {}
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Polynomial(const unsigned int dimension, const unsigned int orde):
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AttractorKernel(dimension, calculateNumberOfParameters(dimension, orde)), orde(orde) {}
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virtual std::string type() const { return "polynomial"; };
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virtual void stf_other(stfu::node & node) const {
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node.addValue("orde") = std::to_string(orde);
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}
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virtual void operator()() {
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std::swap(vectorNew, vectorOld);
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unsigned int m = 0;
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for(unsigned int i = 0; i < dimension; i++) {
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vectorNew[i] = parameters[m];
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m++;
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recur(i, 0, 1, m);
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}
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}
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};
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#endif // POLYNOMIAL_HPP
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