/usr/include/dune/common/gmpfield.hh is in libdune-common-dev 2.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GMPFIELD_HH
#define DUNE_GMPFIELD_HH
/** \file
* \brief Wrapper for the GNU multiprecision (GMP) library
*/
#include <iostream>
#if HAVE_GMP
#include <gmpxx.h>
namespace Dune
{
template< unsigned int precision >
class GMPField
: public mpf_class
{
typedef mpf_class Base;
public:
GMPField ()
: Base(0,precision)
{}
template< class T >
GMPField ( const T &v )
: Base( v,precision )
{}
/*
GMPField &operator=(const GMPField &other)
{
Base(*this) = Base(other);
return *this;
}
*/
// type conversion operators
operator double () const
{
return this->get_d();
}
operator float () const
{
return this->get_d();
}
};
template< unsigned int precision >
inline GMPField< precision >
operator+ ( const GMPField< precision > &a, const GMPField< precision > &b )
{
typedef mpf_class F;
return ((const F &)a + (const F &)b);
}
template< unsigned int precision >
inline GMPField< precision >
operator- ( const GMPField< precision > &a, const GMPField< precision > &b )
{
typedef mpf_class F;
return ((const F &)a - (const F &)b);
}
template< unsigned int precision >
inline GMPField< precision >
operator- ( const GMPField< precision > &a )
{
typedef mpf_class F;
return -((const F &)a);
}
template< unsigned int precision >
inline GMPField< precision >
operator* ( const GMPField< precision > &a, const GMPField< precision > &b )
{
typedef mpf_class F;
return ((const F &)a * (const F &)b);
}
template< unsigned int precision >
inline GMPField< precision >
operator/ ( const GMPField< precision > &a, const GMPField< precision > &b )
{
typedef mpf_class F;
return ((const F &)a / (const F &)b);
}
template< unsigned int precision >
inline std::ostream &
operator<< ( std::ostream &out, const GMPField< precision > &value )
{
return out << static_cast<const mpf_class&>(value);
}
}
namespace std
{
template< unsigned int precision >
inline Dune::GMPField< precision >
sqrt ( const Dune::GMPField< precision > &a )
{
return Dune::GMPField< precision >(sqrt(static_cast<const mpf_class&>(a)));
}
template< unsigned int precision >
inline Dune::GMPField< precision >
abs ( const Dune::GMPField< precision > &a )
{
return Dune::GMPField< precision >( abs( static_cast< const mpf_class & >( a ) ) );
}
}
#endif // HAVE_GMP
#endif // #ifndef DUNE_GMPFIELD_HH
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