mirror of
https://github.com/triqs/dft_tools
synced 2024-12-25 22:03:43 +01:00
52 lines
2.0 KiB
C++
52 lines
2.0 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_SCAL_H
|
|
#define TRIQS_ARRAYS_BLAS_LAPACK_SCAL_H
|
|
#include "./tools.hpp"
|
|
|
|
namespace triqs { namespace arrays { namespace blas {
|
|
|
|
namespace f77 { // overload
|
|
|
|
extern "C" {
|
|
void TRIQS_FORTRAN_MANGLING(dscal)(const int & N, const double & alpha,double * x, const int& incx);
|
|
void TRIQS_FORTRAN_MANGLING(zscal)(const int & N, const std::complex<double> & alpha,std::complex<double> * x, const int& incx);
|
|
}
|
|
|
|
inline void scal (const int & M, const double & alpha, double* x, const int & incx) { TRIQS_FORTRAN_MANGLING(dscal)(M, alpha, x, incx); }
|
|
inline void scal (const int & M, const std::complex<double> & alpha, std::complex<double>* x, const int & incx) { TRIQS_FORTRAN_MANGLING(zscal)(M, alpha, x, incx); }
|
|
}
|
|
|
|
/**
|
|
* Blas1 : scal
|
|
*/
|
|
template< typename VT>
|
|
typename std::enable_if< is_blas_lapack_type<typename VT::value_type>::value && have_same_value_type< VT>::value >::type
|
|
scal (typename VT::value_type const & alpha, VT & X) {
|
|
static_assert( is_amv_value_or_view_class<VT>::value, "blas1 bindings only take vector and vector_view");
|
|
f77::scal(X.size(), alpha, X.data_start(), X.stride());
|
|
}
|
|
|
|
}}}// namespace
|
|
|
|
#endif
|
|
|