File: Interval_arithmetic.cpp

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// Copyright (c) 1999-2004  
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel).  All rights reserved. 
//
// This file is part of CGAL (www.cgal.org); 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.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/next/Number_types/src/CGAL/Interval_arithmetic.cpp $
// $Id: Interval_arithmetic.cpp 67093 2012-01-13 11:22:39Z lrineau $
// 
//
// Author(s)     : Sylvain Pion
 
#include <CGAL/basic.h>
#include <CGAL/FPU.h>

namespace CGAL {

#ifdef CGAL_CFG_DENORMALS_COMPILE_BUG
// For compilers which bug on denormalized values at compile time.
// We generate CGAL_IA_MIN_DOUBLE at run time.
namespace {
double init_min_double()
{
    double d = 1;
    double e = 1;
    do {
	d = e;
	e = CGAL_IA_FORCE_TO_DOUBLE(e/2);
    } while (e != 0);
    return d;
}
} // anonymous namespace

namespace internal {
double minimin = init_min_double();
}
#endif

#ifdef _MSC_VER
namespace {
int dummy_symbol_for_stopping_VC_linker_warning;
} // namespace
#endif

} //namespace CGAL