/usr/include/rheolef/space_constant.h is in librheolef-dev 6.7-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define _RHEOLEF_SPACE_CONSTANT_H
///
/// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito <Pierre.Saramito@imag.fr>
///
/// Rheolef is free software; you can redistribute it and/or modify
/// it under the terms of the GNU General Public License as published by
/// the Free Software Foundation; either version 2 of the License, or
/// (at your option) any later version.
///
/// Rheolef is distributed in the hope that it will be useful,
/// but WITHOUT ANY WARRANTY; without even the implied warranty of
/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/// GNU General Public License for more details.
///
/// You should have received a copy of the GNU General Public License
/// along with Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///
/// =========================================================================
// constants
#include "rheolef/distributed.h"
#include "rheolef/undeterminated.h"
#include "rheolef/field_expr_v2_utilities.h"
#include <type_traits>
#ifdef TO_CLEAN
#include "rheolef/field_functor.h"
#endif // TO_CLEAN
// ---------------------------------------------------------------------------
// utility
// ---------------------------------------------------------------------------
namespace rheolef {
namespace details {
// is_equal : used by type resolution and by is_symmetric
template <class T1, class T2> struct is_equal : std::false_type {};
template <class T> struct is_equal<T,T> : std::true_type {};
// switch for a constant, or a pointer-to-function or a class-function:
template<class T> struct is_scalar : std::false_type {};
template<> struct is_scalar<int> : std::true_type {};
template<> struct is_scalar<const int> : std::true_type {};
template<> struct is_scalar<size_t> : std::true_type {};
template<> struct is_scalar<Float> : std::true_type {};
template<class T> struct is_point : std::false_type {};
template<class T> struct is_point<point_basic<T> > : std::true_type {};
template<class T> struct is_tensor : std::false_type {};
template<class T> struct is_tensor<tensor_basic<T> > : std::true_type {};
template<class T> struct is_tensor3 : std::false_type {};
template<class T> struct is_tensor3<tensor3_basic<T> > : std::true_type {};
template<class T> struct is_tensor4 : std::false_type {};
template<class T> struct is_tensor4<tensor4_basic<T> > : std::true_type {};
// TODO: move it in field_expr_v2_linear.h
// any possible value for an homogeneous field, as involved in expression
template <class ValueType>
struct is_field_expr_v2_constant
: or_type<
is_rheolef_arithmetic<ValueType>
,is_point<ValueType>
,is_tensor<ValueType>
,is_tensor3<ValueType>
,is_tensor4<ValueType>
>
{};
} // namespace details
// ---------------------------------------------------------------------------
// argument promote, for template expression (binders, etc)
// ---------------------------------------------------------------------------
namespace details {
template <class T1, class T2, class Sfinae = void>
struct field_promote_first_argument: promote<T1,T2> {};
template <class T1, class T2, class Sfinae = void>
struct field_promote_second_argument: promote<T1,T2> {};
#define _RHEOLEF_field_promote_argument(tensor) \
template<class T1, class T2> \
struct field_promote_first_argument<tensor##_basic<T1>, T2, \
typename std::enable_if< \
is_rheolef_arithmetic<T1>::value \
&& is_rheolef_arithmetic<T2>::value \
>::type \
> { \
using type = tensor##_basic<typename promote<T1,T2>::type>; }; \
template <class T1, class T2> \
struct field_promote_first_argument<T1,tensor##_basic<T2>, \
typename std::enable_if< \
is_rheolef_arithmetic<T1>::value \
&& is_rheolef_arithmetic<T2>::value \
>::type \
> { \
using type = typename promote<T1,T2>::type; }; \
template <class T1, class T2> \
struct field_promote_second_argument<tensor##_basic<T1>, T2, \
typename std::enable_if< \
is_rheolef_arithmetic<T1>::value \
&& is_rheolef_arithmetic<T2>::value \
>::type \
> { \
using type = typename promote<T1,T2>::type; }; \
template <class T1, class T2> \
struct field_promote_second_argument<T1,tensor##_basic<T2>, \
typename std::enable_if< \
is_rheolef_arithmetic<T1>::value \
&& is_rheolef_arithmetic<T2>::value \
>::type \
> { \
using type = tensor##_basic<typename promote<T1,T2>::type>; };
_RHEOLEF_field_promote_argument(point)
_RHEOLEF_field_promote_argument(tensor)
_RHEOLEF_field_promote_argument(tensor3)
_RHEOLEF_field_promote_argument(tensor4)
#undef _RHEOLEF_field_promote_argument
} // namespace details
// -------------------------------------------------------------
// coordinate system helper
// -------------------------------------------------------------
namespace space_constant {
typedef size_t size_type;
typedef enum {
cartesian = 0,
axisymmetric_rz = 1,
axisymmetric_zr = 2,
last_coord_sys = 3
} coordinate_type;
coordinate_type coordinate_system (std::string sys_coord);
std::string coordinate_system_name (coordinate_type);
void check_coord_sys_and_dimension (coordinate_type, size_type d);
// -------------------------------------------------------------
// multi-component field support
// -------------------------------------------------------------
typedef enum {
scalar = 0,
vector = 1,
tensor = 2, // symmetric, D_ij
unsymmetric_tensor = 3,
tensor3 = 4, // unsymmetric, G_ijk
tensor4 = 5, // symmetric, A_ijkl
mixed = 6,
last_valued = 7
} valued_type;
const std::string& valued_name (valued_type tag);
valued_type valued_tag (const std::string& name);
size_type n_component (
valued_type valued_tag,
size_type d,
coordinate_type sys_coord);
size_type n_component (
const std::string& valued,
size_type d,
coordinate_type sys_coord);
// convert a type to the enum valued_tag:
// size_t tag = valued_tag_traits<T>::value;
template<class T> struct valued_tag_traits { static const valued_type value = scalar; };
template<class T> struct valued_tag_traits<point_basic<T> > { static const valued_type value = vector; };
template<class T> struct valued_tag_traits<tensor_basic<T> > { static const valued_type value = tensor; };
template<class T> struct valued_tag_traits<tensor3_basic<T> > { static const valued_type value = tensor3; };
template<class T> struct valued_tag_traits<tensor4_basic<T> > { static const valued_type value = tensor4; };
template<class T> struct valued_tag_traits<undeterminated_basic<T> > { static const valued_type value = last_valued; };
// convert an enum valued_tag to the type based on T:
// typedef typename valued_type_traits<tag,T>::type valued_t;
//
template<int Tag, class T> struct valued_type_traits { typedef undeterminated_basic<T> type; };
template<class T> struct valued_type_traits<scalar,T> { typedef T type; };
template<class T> struct valued_type_traits<vector,T> { typedef point_basic<T> type; };
template<class T> struct valued_type_traits<tensor,T> { typedef tensor_basic<T> type; };
template<class T> struct valued_type_traits<tensor3,T> { typedef tensor3_basic<T> type; };
template<class T> struct valued_type_traits<tensor4,T> { typedef tensor4_basic<T> type; };
template<class T> struct valued_type_traits<last_valued,T> { typedef undeterminated_basic<T> type; };
// tensorial up and down helpers (for grad(expr))
template<class T> struct rank_down { typedef undeterminated_basic<typename scalar_traits<T>::type> type; };
template<class T> struct rank_down<point_basic<T> > { typedef T type; };
template<class T> struct rank_down<tensor_basic<T> > { typedef point_basic<T> type; };
template<class T> struct rank_down<tensor3_basic<T> > { typedef tensor_basic<T> type; };
template<class T> struct rank_down<tensor4_basic<T> > { typedef tensor3_basic<T> type; };
template<class T> struct rank_up { typedef point_basic<typename scalar_traits<T>::type> type; };
template<class T> struct rank_up<point_basic<T> > { typedef tensor_basic<T> type; };
template<class T> struct rank_up<tensor_basic<T> > { typedef tensor3_basic<T> type; };
template<class T> struct rank_up<tensor3_basic<T> > { typedef tensor4_basic<T> type; };
template<class T> struct rank_up<undeterminated_basic<T> > { typedef undeterminated_basic<typename scalar_traits<T>::type> type; };
template<class T>
T contract_product (const T& a, const T& b) { return a*b; }
template<class T>
T contract_product (const point_basic<T>& a, const point_basic<T>& b) { return dot(a,b); }
template<class T>
T contract_product (const tensor_basic<T>& a, const tensor_basic<T>& b) { return ddot(a,b); }
// -------------------------------------------------------------
// 2-tensor support
// -------------------------------------------------------------
size_type tensor_index (
valued_type valued_tag,
coordinate_type sys_coord,
size_type i,
size_type j);
size_type tensor_index (
std::string valued,
std::string sys_coord,
size_type i,
size_type j);
std::pair<size_type,size_type>
tensor_subscript (
valued_type valued_tag,
coordinate_type sys_coord,
size_type i_comp);
std::string
tensor_subscript_name (
valued_type valued_tag,
coordinate_type sys_coord,
size_type i_comp);
std::pair<size_type,size_type>
tensor_subscript (
std::string valued,
std::string sys_coord,
size_type i_comp);
std::string
tensor_subscript_name (
std::string valued,
std::string sys_coord,
size_type i_comp);
// -------------------------------------------------------------
// 4-tensor support
// -------------------------------------------------------------
size_type
tensor4_index (
valued_type valued,
coordinate_type sys_coord,
size_type i,
size_type j,
size_type k,
size_type l);
size_type
tensor4_index (
std::string valued,
std::string sys_coord,
size_type i,
size_type j,
size_type k,
size_type l);
std::pair<std::pair<size_type,size_type>, std::pair<size_type,size_type> >
tensor4_subscript (
valued_type valued,
coordinate_type sys_coord,
size_type i_comp);
std::string
tensor4_subscript_name (
valued_type valued,
coordinate_type sys_coord,
size_type i_comp);
std::pair<std::pair<size_type,size_type>, std::pair<size_type,size_type> >
tensor4_subscript (
std::string valued,
std::string sys_coord,
size_type i_comp);
std::string
tensor4_subscript_name (
std::string valued,
std::string sys_coord,
size_type i_comp);
// -------------------------------------------------------------
// field*field & field/field valued_type computed at run time
// -------------------------------------------------------------
valued_type multiplies_result_tag (valued_type tag1, valued_type tag2);
valued_type divides_result_tag (valued_type tag1, valued_type tag2);
} // namespace space_constant
// --------------------------------------------------------------------------
// utility to determine whether a template arg is a function or a constant
// --------------------------------------------------------------------------
namespace details {
// build a function that returns a constant
template<class T1, class T2>
struct f_constant {
T2 operator() (const T1& x) const { return c; }
f_constant (const T2& c0) : c(c0) {}
const T2 c;
};
template<class F> struct is_vector_function :
and_type <
std::is_class<F>
,is_point<typename F::result_type>
> {};
template<class T> struct is_vector_function<point_basic<T> (const point_basic<T>)>
: std::true_type {};
template<class E> class field_nonlinear_expr;
template<class E> struct is_expr : std::false_type {};
template<class E> struct is_expr<field_nonlinear_expr<E> > : std::true_type {};
template<class C>
struct is_constant :
or_type <
is_scalar<C>
,is_point<C>
> {};
template<class F>
struct is_function :
and_type <
or_type <
std::is_class<F>
,std::is_pointer<F>
,std::is_function<F>
>
,not_type <
or_type <
is_scalar<F>
,is_point<F>
,is_expr<F>
>
>
>
{};
template<class F>
struct result_type {
typedef typename function_traits<F>::result_type type;
};
template<class T, class R>
struct result_type<R(const point_basic<T>&)> {
typedef R type;
};
template<class T, class R>
struct result_type<R (*)(const point_basic<T>&)> {
typedef R type;
};
template<class Constant>
struct constant_promote { typedef Constant type; };
template<> struct constant_promote<int> { typedef Float type; };
template<> struct constant_promote<size_t> { typedef Float type; };
} // namespace details
} // namespace rheolef
#endif // _RHEOLEF_SPACE_CONSTITUTION_H
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