Open Source Computer Vision Library
https://opencv.org/
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38 lines
1.3 KiB
38 lines
1.3 KiB
9 years ago
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/*
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* solves equations x^4 - x^2 = 0, and x^2 - 2x + 1 = 0
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*/
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#include "opencv2/core/core.hpp"
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#include <iostream>
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int main(void)
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{
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cv::Mat coefs = (cv::Mat_<float>(1,5) << 0, 0, -1, 0, 1 );
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std::cout << "x^4 - x^2 = 0\n\n" << "Coefficients: " << coefs << "\n" << std::endl;
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cv::Mat r;
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double prec;
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prec = cv::solvePoly(coefs, r);
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std::cout << "Preciseness = " << prec << std::endl;
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std::cout << "roots after 1000 iterations:\n" << r << "\n" << std::endl;
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prec = cv::solvePoly(coefs, r, 9999);
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std::cout << "Preciseness = " << prec << std::endl;
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std::cout << "roots after 9999 iterations:\n" << r << "\n" << std::endl;
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std::cout << "\n---------------------------------------\n" << std::endl;
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coefs = (cv::Mat_<float>(1,3) << 1, -2, 1 );
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std::cout << "x^2 - 2x + 1 = 0\n\n" << "Coefficients: " << coefs << "\n" << std::endl;
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prec = cv::solvePoly(coefs, r);
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std::cout << "Preciseness = " << prec << std::endl;
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std::cout << "roots after 1000 iterations:\n" << r << "\n" << std::endl;
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prec = cv::solvePoly(coefs, r, 9999);
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std::cout << "Preciseness = " << prec << std::endl;
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std::cout << "roots after 9999 iterations:\n" << r << "\n" << std::endl;
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return 0;
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}
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