DGtal 1.3.0
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polynomial-derivative.cpp
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1
35#include <iostream>
36#include <string>
37#include <sstream>
38#include "DGtal/math/MPolynomial.h"
41
43
44using namespace DGtal;
45
47
48void usage( int, char** argv )
49{
50 std::cerr << "Usage: " << argv[ 0 ] << " <P>" << std::endl;
51 std::cerr << "\t - computes the first and second derivative of the given polynomial P (in one variable)." << std::endl;
52}
53
57int main( int argc, char** argv )
58{
59 if ( argc < 2 )
60 {
61 usage( argc, argv );
62 return 1;
63 }
64
66 typedef double Ring;
67 typedef MPolynomial<1, Ring> MyPolynomial;
69
71 std::string polynomialString( argv[ 1 ] );
72 std::istringstream polynomialIStream( polynomialString );
73 MyPolynomial P;
74 polynomialIStream >> P;
75 MyPolynomial P1 = derivative<0>( P );
76 MyPolynomial P2 = derivative<0>( P1 );
77 std::cout << "P(X_0) = " << P << std::endl;
78 std::cout << "P'(X_0) = " << P1 << std::endl;
79 std::cout << "P''(X_0) = " << P2 << std::endl;
81 return 0;
82}
83
Aim: Represents a multivariate polynomial, i.e. an element of , where K is some ring or field.
Definition: MPolynomial.h:955
DGtal is the top-level namespace which contains all DGtal functions and types.
int main()
Definition: testBits.cpp:56