mirror of
https://github.com/triqs/dft_tools
synced 2024-11-01 03:33:50 +01:00
52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
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/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2012 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#ifndef TRIQS_ARRAYS_BLAS_LAPACK_SCAL_H
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#define TRIQS_ARRAYS_BLAS_LAPACK_SCAL_H
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#include "./tools.hpp"
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namespace triqs { namespace arrays { namespace blas {
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namespace f77 { // overload
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extern "C" {
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void TRIQS_FORTRAN_MANGLING(dscal)(const int & N, const double & alpha,double * x, const int& incx);
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void TRIQS_FORTRAN_MANGLING(zscal)(const int & N, const std::complex<double> & alpha,std::complex<double> * x, const int& incx);
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}
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inline void scal (const int & M, const double & alpha, double* x, const int & incx) { TRIQS_FORTRAN_MANGLING(dscal)(M, alpha, x, incx); }
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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); }
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}
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/**
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* Blas1 : scal
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*/
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template< typename VT>
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typename std::enable_if< is_blas_lapack_type<typename VT::value_type>::value && have_same_value_type< VT>::value >::type
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scal (typename VT::value_type const & alpha, VT & X) {
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static_assert( is_amv_value_or_view_class<VT>::value, "blas1 bindings only take vector and vector_view");
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f77::scal(X.size(), alpha, X.data_start(), X.stride());
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}
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}}}// namespace
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#endif
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