mirror of
https://github.com/triqs/dft_tools
synced 2024-10-31 19:23:45 +01:00
072b45ac1c
Not in the concept, not needed, just an annoyance. replaced by free functions : first_dim(A), second_dim(A), get_shape(A) and so on...
68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
/*******************************************************************************
|
|
*
|
|
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
|
|
*
|
|
* Copyright (C) 2012 by 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_ARRAYS_IS_BLAS_LAPACK_TYPE_H
|
|
#define TRIQS_ARRAYS_IS_BLAS_LAPACK_TYPE_H
|
|
#include <type_traits>
|
|
#include <triqs/utility/fortran_mangling.hpp>
|
|
|
|
namespace triqs { namespace arrays {
|
|
|
|
// a trait to detect all types for which blas/lapack bindings is defined
|
|
// at the moment double and std::complex<double>
|
|
// We don't need simple precision for the moment... To be added ?
|
|
template<typename T> struct is_blas_lapack_type : std::false_type{};
|
|
template<> struct is_blas_lapack_type <double> : std::true_type{};
|
|
template<> struct is_blas_lapack_type <std::complex<double>> : std::true_type{};
|
|
template<typename T> struct is_blas_lapack_type< const T> : is_blas_lapack_type<T>{};
|
|
|
|
// true iif all T::value_type are the same
|
|
template<typename ... T> struct have_same_value_type;
|
|
template<typename T0> struct have_same_value_type<T0>: std::true_type{};
|
|
template<typename T0, typename T1, typename ... T> struct have_same_value_type<T0,T1,T...>:
|
|
std::integral_constant<bool,
|
|
std::is_same< typename std::remove_cv<typename T0::value_type>::type, typename std::remove_cv<typename T1::value_type>::type> ::value
|
|
&& have_same_value_type<T1,T...>::value> {};
|
|
|
|
namespace blas_lapack_tools {
|
|
|
|
template <typename MatrixType> char get_trans(MatrixType const & A, bool transpose) {
|
|
return (A.memory_layout_is_fortran() ? (transpose ? 'T' : 'N') : (transpose ? 'N' : 'T') );
|
|
}
|
|
|
|
// returns the # of rows of the matrix *seen* as fortran matrix
|
|
template <typename MatrixType> int get_n_rows (MatrixType const & A) {
|
|
return (A.memory_layout_is_fortran() ? first_dim(A) : second_dim(A));
|
|
}
|
|
// returns the # of cols of the matrix *seen* as fortran matrix
|
|
template <typename MatrixType> int get_n_cols (MatrixType const & A) {
|
|
return (A.memory_layout_is_fortran() ? second_dim(A) : first_dim(A));
|
|
}
|
|
|
|
template <typename MatrixType> int get_ld (MatrixType const & A) {
|
|
return A.indexmap().strides()[A.memory_layout_is_fortran() ? 1 : 0];
|
|
}
|
|
|
|
}
|
|
}}// namespace
|
|
|
|
#endif
|
|
|