C-XSC - A C++ Class Library for Extended Scientific Computing  2.5.4
lx_real.cpp
00001 /*
00002 **  CXSC is a C++ library for eXtended Scientific Computing (V 2.5.4)
00003 **
00004 **  Copyright (C) 1990-2000 Institut fuer Angewandte Mathematik,
00005 **                          Universitaet Karlsruhe, Germany
00006 **            (C) 2000-2014 Wiss. Rechnen/Softwaretechnologie
00007 **                          Universitaet Wuppertal, Germany   
00008 **
00009 **  This library is free software; you can redistribute it and/or
00010 **  modify it under the terms of the GNU Library General Public
00011 **  License as published by the Free Software Foundation; either
00012 **  version 2 of the License, or (at your option) any later version.
00013 **
00014 **  This library is distributed in the hope that it will be useful,
00015 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 **  Library General Public License for more details.
00018 **
00019 **  You should have received a copy of the GNU Library General Public
00020 **  License along with this library; if not, write to the Free
00021 **  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 */
00023 
00024 /* CVS $Id: lx_real.cpp,v 1.8 2014/01/30 17:23:47 cxsc Exp $ */
00025 
00026 /*
00027 **  F. Blomquist, University of Wuppertal, 19.09.2007;
00028 */
00029 
00030 #include "lx_real.hpp"
00031 #include "lx_interval.hpp"
00032 
00033 namespace cxsc {
00034 
00035 inline std::ostream& operator << (std::ostream& s, const lx_real& b) throw()
00036 // A value a of type lx_real is written to the output channel.
00037 // The output has the form:  {2**(ex),lr}
00038 {
00039         lx_interval a(b);
00040         real p;
00041         l_interval m;
00042         l_real x;
00043         
00044         Bin2Dec(a,p,m);
00045         x = mid(m);
00046         
00047         s << "{ " 
00048           << "10**("
00049           << SaveOpt << SetPrecision(0,0) << Fixed << p << RestoreOpt
00050           << ")" 
00051           << "*" 
00052           << x
00053           << " }";
00054         return s;
00055 }
00056 
00057 } // end namespace cxsc