mirror of https://github.com/CGAL/cgal
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
// Copyright (c) 2006-2008 Inria Lorraine (France). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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// Author: Luis Peñaranda <luis.penaranda@gmx.com>
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#ifndef CGAL_RS_ALGEBRAIC_1_OTHER_H
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#define CGAL_RS_ALGEBRAIC_1_OTHER_H
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namespace CGAL{
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inline
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bool is_valid(const Algebraic_1 &n){
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return n.is_valid();
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}
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inline
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bool is_finite(const Algebraic_1 &n){
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return n.is_finite();
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}
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//template <class _Gcd_policy>
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inline
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double to_double(Algebraic_1 &n){
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//typedef _Gcd_policy Gcd;
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return n.to_double/*<Gcd>*/();
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}
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inline
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std::pair<double,double>to_interval(const Algebraic_1 &n){
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return n.to_interval();
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}
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inline
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Algebraic_1 sqrt(const Algebraic_1 &ntval){
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return ntval.sqrt();
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}
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inline
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std::ostream& operator<<(std::ostream &os,const Algebraic_1 &a){
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// (interval,polynomial,number_of_root,multiplicity,left_sign)
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return os<<'('<<a.interval()<<','<<a.pol()<<','<<
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a.nr()<<','<<a.mult()<<','<<a.lefteval()<<')';
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}
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inline
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std::istream& operator>>(std::istream &is,Algebraic_1 &a){
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Gmpfi i;
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RS_polynomial_1 pol;
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int nr,mult,eval;
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std::istream::int_type c;
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std::ios::fmtflags old_flags=is.flags();
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is.unsetf(std::ios::skipws);
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gmpz_eat_white_space(is);
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c=is.get();
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if(c!='(')
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goto is_fail_ret;
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gmpz_eat_white_space(is);
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// read the Gmpfi
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is>>i;
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c=is.get();
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if(c!=',')
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goto is_fail_ret;
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is>>pol;
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gmpz_eat_white_space(is);
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c=is.get();
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if(c!=',')
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goto is_fail_ret;
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is>>nr;
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gmpz_eat_white_space(is);
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c=is.get();
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if(c!=',')
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goto is_fail_ret;
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is>>mult;
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gmpz_eat_white_space(is);
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c=is.get();
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if(c!=',')
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goto is_fail_ret;
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is>>eval;
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gmpz_eat_white_space(is);
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c=is.get();
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if(c!=')')
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goto is_fail_ret;
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a=Algebraic_1(i.mpfi(), // interval
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*(new RS_polynomial_1(pol)), // polynomial
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nr, // number of root
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mult, // multiplicity
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(mpfi_ptr)NULL, // previous root
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(mpfi_ptr)NULL, // next root
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(CGAL::Sign)eval);// evaluation on the left bound
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goto is_ret;
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is_fail_ret:
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is.setstate(std::ios_base::failbit);
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is_ret:
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is.flags(old_flags);
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return is;
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}
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} // namespace CGAL
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#endif // CGAL_RS_ALGEBRAIC_1_OTHER_H
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