/usr/include/dune/common/gmpfield.hh is in libdune-common-dev 2.4.1-1.
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>
#include <string>
#if HAVE_GMP
#include <gmpxx.h>
namespace Dune
{
template< unsigned int precision >
class GMPField
: public mpf_class
{
typedef mpf_class Base;
public:
/** default constructor, initialize to zero */
GMPField ()
: Base(0,precision)
{}
/** \brief initialize from a string
\note this is the only reliable way to initialize with higher precision values
*/
GMPField ( const char* str )
: Base(str,precision)
{}
/** \brief initialize from a string
\note this is the only reliable way to initialize with higher precision values
*/
GMPField ( const std::string& str )
: Base(str,precision)
{}
/** \brief initialize from a compatible scalar type
*/
template< class T,
typename EnableIf = typename std::enable_if<
std::is_convertible<T, mpf_class>::value>::type
>
GMPField ( const T &v )
: Base( v,precision )
{}
// type conversion operators
operator double () const
{
return this->get_d();
}
};
}
#endif // HAVE_GMP
#endif // #ifndef DUNE_GMPFIELD_HH
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