smear_HYP_SF.cpp

Go to the documentation of this file.

 
#include "smear_HYP_SF.h"
 
#ifdef USE_FACTORY_AUTOREGISTER
namespace {
  bool init = Smear_HYP_SF::register_factory();
}
#endif
 
const std::string Smear_HYP_SF::class_name = "Smear_HYP_SF";
 
//====================================================================
void Smear_HYP_SF::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              alpha1, alpha2, alpha3;
  std::vector<double> phi, phipr;
 
  int err = 0;
  err += params.fetch_double("alpha1", alpha1);
  err += params.fetch_double("alpha2", alpha2);
  err += params.fetch_double("alpha3", alpha3);
  err += params.fetch_double_vector("phi", phi);
  err += params.fetch_double_vector("phipr", phipr);
 
  if (err) {
    vout.crucial(m_vl, "Error at %s: input parameter not found.\n", class_name.c_str());
    exit(EXIT_FAILURE);
  }
 
  set_parameters(alpha1, alpha2, alpha3, phi, phipr);
}
 
 
//====================================================================
void Smear_HYP_SF::get_parameters(Parameters& params) const
{
  params.set_double("alpha1", m_alpha1);
  params.set_double("alpha2", m_alpha2);
  params.set_double("alpha3", m_alpha3);
  params.set_double_vector("phi", m_phi);
  params.set_double_vector("phipr", m_phipr);
 
  params.set_string("verbose_level", vout.get_verbose_level(m_vl));
}
 
 
//====================================================================
void Smear_HYP_SF::set_parameters(const double alpha1,
                                  const double alpha2,
                                  const double alpha3,
                                  const std::vector<double>& phi,
                                  const std::vector<double>& phipr)
{
  //- print input parameters
  vout.general(m_vl, "%s:\n", class_name.c_str());
  vout.general(m_vl, "  alpha1 = %10.6F\n", alpha1);
  vout.general(m_vl, "  alpha2 = %10.6F\n", alpha2);
  vout.general(m_vl, "  alpha3 = %10.6F\n", alpha3);
 
  vout.general(m_vl, "  phi1  = %12.6f\n", phi[0]);
  vout.general(m_vl, "  phi2  = %12.6f\n", phi[1]);
  vout.general(m_vl, "  phi3  = %12.6f\n", phi[2]);
  vout.general(m_vl, "  phipr1= %12.6f\n", phipr[0]);
  vout.general(m_vl, "  phipr2= %12.6f\n", phipr[1]);
  vout.general(m_vl, "  phipr3= %12.6f\n", phipr[2]);
 
  //- range check
  // NB. alpha1,alpha2,alpha3 == 0 is allowed.
  // NB. phi,phipr == 0 is allowed.
 
  //- store values
  m_alpha1 = alpha1;
  m_alpha2 = alpha2;
  m_alpha3 = alpha3;
 
  m_phi.resize(3);
  m_phipr.resize(3);
  for (int i = 0; i < 3; ++i) {
    m_phi[i]   = phi[i];
    m_phipr[i] = phipr[i];
  }
 
  Field_SF::set_boundary_matrix(m_wk, m_phi);
  Field_SF::set_boundary_matrix(m_wkpr, m_phipr);
}
 
 
//====================================================================
void Smear_HYP_SF::init()
{
  m_Ndim = CommonParameters::Ndim();
  m_Nvol = CommonParameters::Nvol();
 
  m_U.resize(m_Ndim);
  m_v1.resize(size_v1());
  m_v2.resize(size_v2());
}
 
 
//====================================================================
void Smear_HYP_SF::smear(Field_G& Usmear, const Field_G& U)
{
  assert(U.nvol() == m_Nvol);
  assert(U.nex() == m_Ndim);
 
  assert(Usmear.nvol() == m_Nvol);
  assert(Usmear.nex() == m_Ndim);
 
  for (int mu = 0; mu < m_Ndim; ++mu) {
    copy(m_U[mu], 0, U, mu);
    if (mu != 3) Field_SF::set_boundary_wk(m_U[mu], m_wk);
  }
 
  step1();
  //  vout.general(m_vl,"level-1 step finished.\n");
  step2();
  //  vout.general(m_vl,"level-2 step finished.\n");
  step3(Usmear);
  //  vout.general(m_vl,"level-3 step finished.\n");
}
 
 
//====================================================================
void Smear_HYP_SF::step1()
{
  for (int mu = 0; mu < m_Ndim; ++mu) {
    for (int nu = 0; nu < m_Ndim; ++nu) {
      if (nu == mu) continue;
 
      for (int rho = nu + 1; rho < m_Ndim; ++rho) {
        if (rho == mu) continue;
 
        int sig = 6 - mu - nu - rho;
 
        Field_G c1;
        staple(c1, m_U[mu], m_U[sig], mu, sig);
        //c1 *= m_alpha3 / 2.0;
        scal(c1, m_alpha3 * 0.5);
        m_proj->project(m_v1[index_v1(mu, nu, rho)], m_alpha3, c1, m_U[mu]);
 
        if (mu != 3) Field_SF::set_boundary_wk(
            m_v1[index_v1(mu, nu, rho)], m_wk);
      }
    }
  }
}
 
 
//====================================================================
void Smear_HYP_SF::step2()
{
  for (int mu = 0; mu < m_Ndim; ++mu) {
    for (int nu = 0; nu < m_Ndim; ++nu) {
      if (nu == mu) continue;
 
      Field_G c2;
      c2.set(0.0);
 
      for (int rho = 0; rho < m_Ndim; ++rho) {
        if ((rho != mu) && (rho != nu)) {
          Field_G u_tmp;
          staple(u_tmp, m_v1[index_v1(mu, nu, rho)],
                 m_v1[index_v1(rho, nu, mu)], mu, rho);
          axpy(c2, 0, 1.0, u_tmp, 0);
        }
      }
 
      //c2 *= m_alpha2 / 4.0;
      scal(c2, m_alpha2 * 0.25);
      m_proj->project(m_v2[index_v2(mu, nu)], m_alpha2, c2, m_U[mu]);
 
      if (mu != 3) Field_SF::set_boundary_wk(m_v2[index_v2(mu, nu)], m_wk);
    }
  }
}
 
 
//====================================================================
void Smear_HYP_SF::step3(Field_G& v)
{
  for (int mu = 0; mu < m_Ndim; ++mu) {
    Field_G c3;
    c3.set(0.0);
 
    Field_G u_tmp;
 
    for (int nu = 0; nu < m_Ndim; ++nu) {
      if (nu != mu) {
        staple(u_tmp, m_v2[index_v2(mu, nu)],
               m_v2[index_v2(nu, mu)], mu, nu);
        axpy(c3, 0, 1.0, u_tmp, 0);
      }
    }
 
    //c3 *= m_alpha1 / 6.0;
    scal(c3, m_alpha1 / 6.0);
    m_proj->project(u_tmp, m_alpha1, c3, m_U[mu]);
 
    if (mu != 3) Field_SF::set_boundary_wk(u_tmp, m_wk);
 
    copy(v, mu, u_tmp, 0);
  }
}
 
 
//====================================================================
void Smear_HYP_SF::staple(Field_G& c,
                          const Field_G& u_mu, const Field_G& u_nu,
                          const int mu, const int nu)
{
  //- upper direction
  Field_G v1;
 
  m_shift.backward(v1, u_mu, nu);
  if (nu == 3) Field_SF::set_boundary_wkpr(v1, m_wkpr);
 
  Field_G v2;
  mult_Field_Gnn(v2, 0, u_nu, 0, v1, 0);
 
  m_shift.backward(v1, u_nu, mu);
  if (mu == 3) Field_SF::set_boundary_wkpr(v1, m_wkpr);
  mult_Field_Gnd(c, 0, v2, 0, v1, 0);
 
  //- lower direction
  m_shift.backward(v2, u_nu, mu);
  if (mu == 3) Field_SF::set_boundary_wkpr(v2, m_wkpr);
  mult_Field_Gnn(v1, 0, u_mu, 0, v2, 0);
  mult_Field_Gdn(v2, 0, u_nu, 0, v1, 0);
  m_shift.forward(v1, v2, nu);
  axpy(c, 0, 1.0, v1, 0);
}
 
 
//============================================================END=====