DGtal 1.3.0
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polynomial-read.cpp
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1
48#include <iostream>
49#include <iomanip>
50#include <sstream>
51#include "DGtal/base/Common.h"
52#include "DGtal/math/MPolynomial.h"
53#include "DGtal/io/readers/MPolynomialReader.h"
55
56using namespace std;
57using namespace DGtal;
58
59
61// Standard services - public :
62
66int main( int /*argc*/, char** /*argv*/ )
67{
68 typedef double Ring;
71 string str;
72
73 std::cout << "Type any multi-variate polynomial, then press return." << std::endl
74 << "Examples: xyz^3-4yz, (x+y+z)*(x-y-z)^2." << std::endl;
75 do {
76 getline( cin, str );
77 if ( cin.good() && ( ! str.empty() ) )
78 {
79 std::string::const_iterator iter
80 = reader.read( P, str.begin(), str.end() );
81 bool ok = iter == str.end();
82 if ( ! ok )
83 {
84 std::cerr << "ERROR: I read only <"
85 << str.substr( 0, iter - str.begin() )
86 << ">, and I built P=" << P << std::endl;
87 }
88 std::cout << (ok ? "Ok : " : "Err: ") << P << std::endl;
89 }
90 } while ( ! str.empty() );
91 return 0;
92}
93// //
Aim: This class converts a string polynomial expression in a multivariate polynomial.
Iterator read(Polynomial &p, Iterator begin, Iterator end)
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.
STL namespace.
int main()
Definition: testBits.cpp:56