/*******************************************************************************
 *
 * 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