DGtal 1.3.0
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#include <iostream>
#include <iomanip>
#include <sstream>
#include "DGtal/base/Common.h"
#include "DGtal/math/MPolynomial.h"
#include "DGtal/io/readers/MPolynomialReader.h"

Go to the source code of this file.

## Functions

int main (int, char **)

## Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Date
2012/02/12

Functions for testing class Signal.

This file is part of the DGtal library.

## ◆ main()

 int main ( int , char ** )

A simple example to show how to read a multivariate-polynomial from stdin.

Definition at line 66 of file polynomial-read.cpp.

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
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}
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