polynomial-read.cpp File Reference

#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/.

Author

Jacques-Olivier Lachaud (jacqu.nosp@m.es-o.nosp@m.livie.nosp@m.r.la.nosp@m.chaud.nosp@m.@uni.nosp@m.v-sav.nosp@m.oie..nosp@m.fr ) Laboratory of Mathematics (CNRS, UMR 5807), University of Savoie, France

Date

2012/02/12

Functions for testing class Signal.

This file is part of the DGtal library.

Definition in file polynomial-read.cpp.

Function Documentation

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.

{
  typedef double Ring;
  MPolynomial<3,Ring,std::allocator<Ring> > P;
  MPolynomialReader<3,Ring> reader;
  string str;
 
  std::cout << "Type any multi-variate polynomial, then press return." << std::endl
            << "Examples: xyz^3-4yz, (x+y+z)*(x-y-z)^2." << std::endl;
  do {
    getline( cin, str );
    if ( cin.good() && ( ! str.empty() ) )
      {
        std::string::const_iterator iter 
          = reader.read( P, str.begin(), str.end() );
        bool ok = iter == str.end();
        if ( ! ok )
          {
            std::cerr << "ERROR: I read only <" 
                      << str.substr( 0, iter - str.begin() )
                      << ">, and I built P=" << P << std::endl;
          }
        std::cout << (ok ? "Ok : " : "Err: ") << P << std::endl;
      }
  } while ( ! str.empty() );
  return 0;
}

References DGtal::MPolynomialReader< n, TRing, TAlloc, TIterator >::read().