mirror of
https://github.com/triqs/dft_tools
synced 2024-12-25 05:43:40 +01:00
61 lines
2.6 KiB
C++
61 lines
2.6 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_BLAS_LAPACK_AXPY_H
|
|
#define TRIQS_ARRAYS_BLAS_LAPACK_AXPY_H
|
|
#include "./tools.hpp"
|
|
//#include "./qcache.hpp"
|
|
|
|
namespace triqs { namespace arrays { namespace blas {
|
|
|
|
namespace f77 { // overload
|
|
|
|
extern "C" {
|
|
void TRIQS_FORTRAN_MANGLING(daxpy)(const int & N, const double & alpha, const double * x, const int& incx, double * y, const int& incy);
|
|
void TRIQS_FORTRAN_MANGLING(zaxpy)(const int & N, const std::complex<double> & alpha, const std::complex<double> * x, const int& incx, std::complex<double> * y, const int& incy);
|
|
}
|
|
|
|
inline void axpy (const int & N, const double & alpha, const double* x, const int & incx, double* Y, const int & incy) {
|
|
TRIQS_FORTRAN_MANGLING(daxpy)(N, alpha, x, incx, Y, incy);
|
|
}
|
|
inline void axpy (const int & N, const std::complex<double> & alpha, const std::complex<double>* x, const int & incx, std::complex<double>* Y, const int & incy) {
|
|
TRIQS_FORTRAN_MANGLING(zaxpy)(N, alpha, x, incx, Y, incy);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Blas 1: copy
|
|
*/
|
|
template< typename VTX, typename VTY>
|
|
typename std::enable_if< is_blas_lapack_type<typename VTX::value_type>::value && have_same_value_type< VTX, VTY>::value >::type
|
|
axpy (typename VTX::value_type const & alpha ,VTX const & X, VTY & Y) {
|
|
static_assert( is_amv_value_or_view_class<VTX>::value, "blas1 bindings only take vector and vector_view");
|
|
static_assert( is_amv_value_or_view_class<VTY>::value, "blas1 bindings only take vector and vector_view");
|
|
//if (( X.size() != Y.size()) ) Y.resize(X.size());
|
|
//const_qcache<VTX> Cx(X); // mettre la condition a la main
|
|
//f77::copy(X.size(), Cx().data_start(), Cx().stride(), Y.data_start(), Y.stride());
|
|
f77::axpy(X.size(), alpha, X.data_start(), X.stride(), Y.data_start(), Y.stride());
|
|
}
|
|
|
|
}}}// namespace
|
|
|
|
#endif
|
|
|