Functionals.h

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//////////////////////////////////////////////////////////////////////////////////////
// This file is distributed under the University of Illinois/NCSA Open Source License.
// See LICENSE file in top directory for details.
//
// Copyright (c) 2016 Jeongnim Kim and QMCPACK developers.
//
// File developed by: Paul R. C. Kent, kentpr@ornl.gov, Oak Ridge National Laboratory
//
// File created by: Paul R. C. Kent, kentpr@ornl.gov, Oak Ridge National Laboratory
//////////////////////////////////////////////////////////////////////////////////////


//           http://pathintegrals.info                     //
/////////////////////////////////////////////////////////////

#ifndef FUNCTIONALS_H
#define FUNCTIONALS_H

void ExchangePotential(double nup, double ndown, double& Vup, double& Vdown);
void CorrelationPotential(double nup, double ndown, double& Vup, double& Vdown);

void CPPExCorr(double nup, double ndown, double& Vup, double& Vdown);

void FortranExCorr(double nup, double ndown, double& Vup, double& Vdown);

void FortranExCorr(double n, double& Exc, double& Vxc);


double FortranXCE(double nup, double ndown);

#endif