mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 06:14:14 +01:00
a5938a8d9e
- the arithmetics of the gf mesh_points : the forwarding of the second argument was missing, leading to subtle bugs e.g. in (in matrix case) : deltaw(iom_) << iom_ * gw.singularity()(-1) + gw.singularity()(0) - gw(iom_); because the partial evaluation of the expression introduced a dangling const matrix_view & instead of moving the temporary matrix_view into the final matrix expression template.
75 lines
3.7 KiB
C++
75 lines
3.7 KiB
C++
/*******************************************************************************
|
|
*
|
|
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
|
|
*
|
|
* Copyright (C) 2012 by M. Ferrero, O. Parcollet
|
|
*
|
|
* TRIQS 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 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* TRIQS 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
|
|
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
******************************************************************************/
|
|
#ifndef TRIQS_GF_MESHTOOLS_H
|
|
#define TRIQS_GF_MESHTOOLS_H
|
|
#include "../tools.hpp"
|
|
|
|
namespace triqs {
|
|
namespace gfs {
|
|
|
|
// Derive from this object using CRTP to provide arithmetic operation by casting the final object to C
|
|
// by not forwarding x, I assume the cast is a simple value, not a matrix, but this is ok
|
|
template <typename Derived, typename C> struct arith_ops_by_cast {};
|
|
|
|
#define IMPL_OP(OP) \
|
|
template <typename D, typename C, typename Y> \
|
|
auto operator OP(arith_ops_by_cast<D, C> const& x, Y&& y)->decltype(std::declval<C>() OP std::forward<Y>(y)) { \
|
|
return C(static_cast<D const&>(x)) OP std::forward<Y>(y); \
|
|
} \
|
|
template <typename D, typename C, typename Y> \
|
|
auto operator OP(Y&& y, arith_ops_by_cast<D, C> const& x) \
|
|
->TYPE_DISABLE_IF(decltype(std::forward<Y>(y) OP std::declval<C>()), \
|
|
std::is_same<typename std::remove_cv<typename std::remove_reference<Y>::type>::type, D>) { \
|
|
return std::forward<Y>(y) OP C(static_cast<D const&>(x)); \
|
|
}
|
|
|
|
IMPL_OP(+);
|
|
IMPL_OP(-);
|
|
IMPL_OP(*);
|
|
IMPL_OP(/ );
|
|
#undef IMPL_OP
|
|
|
|
|
|
//------------------------------------------------------
|
|
|
|
template<typename MeshType>
|
|
class mesh_pt_generator :
|
|
public boost::iterator_facade< mesh_pt_generator<MeshType>, typename MeshType::mesh_point_t , boost::forward_traversal_tag,
|
|
typename MeshType::mesh_point_t const & > {
|
|
friend class boost::iterator_core_access;
|
|
MeshType const * mesh;
|
|
size_t u;
|
|
typename MeshType::mesh_point_t pt;
|
|
typename MeshType::mesh_point_t const & dereference() const { return pt;}
|
|
bool equal(mesh_pt_generator const & other) const { return ((other.u==u) );}
|
|
// do NOT check = of mesh, otherwise e.g. block iterator does not work (infinite loop...)
|
|
//bool equal(mesh_pt_generator const & other) const { return ((mesh == other.mesh) && (other.u==u) );}
|
|
public:
|
|
mesh_pt_generator( MeshType const * m=NULL, bool atEnd = false): mesh(m), u(atEnd ? m->size(): 0), pt((*m)[typename MeshType::index_t()]) {}
|
|
void increment() { ++u; pt.advance(); }
|
|
bool at_end() const { return (u>=mesh->size());}
|
|
typename MeshType::domain_t::point_t to_point() const { return pt;}
|
|
};
|
|
|
|
|
|
}}
|
|
#endif
|