smear_APE_spatial.cpp

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#include "smear_APE_spatial.h"
 
#ifdef USE_FACTORY_AUTOREGISTER
namespace {
  bool init = Smear_APE_spatial::register_factory();
}
#endif
 
const std::string Smear_APE_spatial::class_name = "Smear_APE_spatial";
 
//====================================================================
void Smear_APE_spatial::set_parameters(const Parameters& params)
{
  std::string vlevel;
  if (!params.fetch_string("verbose_level", vlevel)) {
    m_vl = vout.set_verbose_level(vlevel);
  }
 
  //- fetch and check input parameters
  double rho;
 
  int err = 0;
  err += params.fetch_double("rho", rho);
 
  if (err) {
    vout.crucial(m_vl, "Error at %s: input parameter not found.\n", class_name.c_str());
    exit(EXIT_FAILURE);
  }
 
  set_parameters(rho);
}
 
 
//====================================================================
void Smear_APE_spatial::get_parameters(Parameters& params) const
{
  params.set_double("rho", m_rho);
 
  params.set_string("verbose_level", vout.get_verbose_level(m_vl));
}
 
 
//====================================================================
void Smear_APE_spatial::set_parameters(const double rho)
{
  //- print input parameters
  vout.general(m_vl, "%s:\n", class_name.c_str());
  vout.general(m_vl, "  rho = %10.6F\n", rho);
 
  //- range check
  // NB. rho == 0 is allowed.
 
  //- store values
  m_rho = rho;
}
 
 
//====================================================================
void Smear_APE_spatial::smear(Field_G& Usmear, const Field_G& U)
{
  const int Nvol = CommonParameters::Nvol();
 
  assert(U.nvol() == Nvol);
  assert(U.nex() == m_Ndim);
 
  assert(Usmear.nvol() == Nvol);
  assert(Usmear.nex() == m_Ndim);
 
  const int Ndim_spc = m_Ndim - 1;
 
  Staple_lex staple;
 
  double plaq = staple.plaq_s(U);
  vout.general(m_vl, "  plaq_s(org  ) = %12.8f\n", plaq);
 
  plaq = staple.plaq_t(U);
  vout.general(m_vl, "  plaq_t(org  ) = %12.8f\n", plaq);
 
  Usmear.set(0.0);
 
  for (int mu = 0; mu < Ndim_spc; ++mu) {
    Field_G c_tmp;
    c_tmp.set(0.0);
 
    Field_G u_tmp;
    u_tmp.setpart_ex(0, U, mu);
 
    Field_G u_tmp2;
 
    for (int nu = 0; nu < Ndim_spc; ++nu) {
      if (nu != mu) {
        staple.upper(u_tmp2, U, mu, nu);
        c_tmp.addpart_ex(0, u_tmp2, 0, m_rho);
 
        staple.lower(u_tmp2, U, mu, nu);
        c_tmp.addpart_ex(0, u_tmp2, 0, m_rho);
      }
    }
 
    m_proj->project(u_tmp2, m_rho, c_tmp, u_tmp);
    Usmear.setpart_ex(mu, u_tmp2, 0);
  }
 
  const int mu = m_Ndim - 1; // temporal link: unsmeared.
  Usmear.setpart_ex(mu, U, mu);
 
  plaq = staple.plaq_s(Usmear);
  vout.general(m_vl, "  plaq_s(smear) = %12.8f\n", plaq);
 
  plaq = staple.plaq_t(Usmear);
  vout.general(m_vl, "  plaq_t(smear) = %12.8f\n", plaq);
}
 
 
//====================================================================
//============================================================END=====