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2mn_integrator.c
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/
2mn_integrator.c
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/* $Id$ */
#ifdef HAVE_CONFIG_H
# include<config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include "su3.h"
#include "su3adj.h"
#include "expo.h"
#include "ranlxd.h"
#include "sse.h"
#include "global.h"
#include "linalg_eo.h"
#include "start.h"
#include "linsolve.h"
#include "xchange.h"
#include "deriv_Sb.h"
#include "Hopping_Matrix.h"
#include "tm_operators.h"
#include "hybrid_update.h"
#include "derivative_psf.h"
#include "update_backward_gauge.h"
#include "2mn_integrator.h"
extern int count00, count01, count10, count11, count20, count21;
/* double dtmp[5]; */
void mn2_integrator(int * const n_int, const double tau,
const int S, const int halfstep, double * const lambda) {
int i,j=0;
double eps, eps0,
oneminus2lambda = (1.-2.*lambda[S]), oneminus2lambda0;
if(S == g_nr_of_psf) {
/* initialize the counter for the inverter */
count00=0; count01=0; count10=0; count11=0; count20=0; count21=0;
/* for(i=0;i<5;i++) { */
/* dtmp[i] = 0.; */
/* } */
eps = tau/((double)n_int[S]);
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
for(i = 1; i < S; i++) {
update_fermion_momenta(lambda[S-i+1]*eps, S-i, 0);
/* dtmp[S-i+1] += lambda[S-i+1]*eps; */
eps /= ((double)n_int[S-i])*2;
}
update_fermion_momenta(lambda[1]*eps, 0, 0);
/* dtmp[1] += lambda[1]*eps; */
eps /= ((double)n_int[0])*2;
gauge_momenta(lambda[0]*eps);
/* dtmp[0] += lambda[0]*eps; */
}
eps = tau/((double)n_int[S]);
if(S == 1) {
eps0 = 0.5*eps/((double)n_int[0]);
oneminus2lambda0 = (1.-2.*lambda[0]);
for(i = 1; i < n_int[S]; i++) {
for(j = 0; j < n_int[0]; j++) {
update_gauge(0.5*eps0);
gauge_momenta(oneminus2lambda0*eps0);
/* dtmp[0] += oneminus2lambda0*eps0; */
update_gauge(0.5*eps0);
gauge_momenta(2*lambda[0]*eps0);
/* dtmp[0] += 2*lambda[0]*eps0; */
}
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
update_fermion_momenta(oneminus2lambda*eps, S-1, 0);
/* dtmp[S] += oneminus2lambda*eps; */
for(j = 0; j < n_int[0]; j++) {
update_gauge(0.5*eps0);
gauge_momenta(oneminus2lambda0*eps0);
/* dtmp[0] += oneminus2lambda0*eps0; */
update_gauge(0.5*eps0);
gauge_momenta(2*lambda[0]*eps0);
/* dtmp[0] += 2*lambda[0]*eps0; */
}
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
update_fermion_momenta(2*lambda[S]*eps, S-1, 0);
/* dtmp[S] += 2*lambda[S]*eps; */
}
for(j = 0; j < n_int[0]; j++) {
update_gauge(0.5*eps0);
gauge_momenta(oneminus2lambda0*eps0);
/* dtmp[0] += oneminus2lambda0*eps0; */
update_gauge(0.5*eps0);
gauge_momenta(2*lambda[0]*eps0);
/* dtmp[0] += 2*lambda[0]*eps0; */
}
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
update_fermion_momenta(oneminus2lambda*eps, S-1, 0);
/* dtmp[S] += oneminus2lambda*eps; */
for(j = 1; j < n_int[0]; j++) {
update_gauge(0.5*eps0);
gauge_momenta(oneminus2lambda0*eps0);
/* dtmp[0] += oneminus2lambda0*eps0; */
update_gauge(0.5*eps0);
gauge_momenta(2*lambda[0]*eps0);
/* dtmp[0] += 2*lambda[0]*eps0; */
}
update_gauge(0.5*eps0);
gauge_momenta(oneminus2lambda0*eps0);
/* dtmp[0] += oneminus2lambda0*eps0; */
update_gauge(0.5*eps0);
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
if(halfstep != 1) {
gauge_momenta(2.*lambda[0]*eps0);
/* dtmp[0] += 2.*lambda[0]*eps0; */
update_fermion_momenta(2.*lambda[S]*eps, S-1, 0);
/* dtmp[S] += 2.*lambda[S]*eps; */
}
}
else {
for(i = 1; i < n_int[S]; i++){
mn2_integrator(n_int, eps/2., S-1, 0, lambda);
update_fermion_momenta(oneminus2lambda*eps, S-1, 0);
mn2_integrator(n_int, eps/2., S-1, 0, lambda);
update_fermion_momenta(2*lambda[S]*eps, S-1, 0);
}
mn2_integrator(n_int, eps/2., S-1, 0, lambda);
update_fermion_momenta(oneminus2lambda*eps, S-1, 0);
if(S == g_nr_of_psf) {
mn2_integrator(n_int, eps/2., S-1, 1, lambda);
}
else mn2_integrator(n_int, eps/2., S-1, halfstep, lambda);
if(halfstep != 1 && S != g_nr_of_psf) {
update_fermion_momenta(2*lambda[S]*eps, S-1, 0);
}
}
if(S == g_nr_of_psf) {
for(i = 1; i < S; i++) {
update_fermion_momenta(lambda[S-i+1]*eps, S-i, 0);
eps /= ((double)n_int[S-i])*2;
}
update_fermion_momenta(lambda[1]*eps, 0, 0);
eps /= ((double)n_int[0])*2;
gauge_momenta(lambda[0]*eps);
/* for(i=0;i<5;i++) { */
/* printf("%d %e %e\n", i, dtmp[i], lambda[i]); */
/* } */
}
}
void mn2p_integrator(int * const n_int, const double tau,
const int S, double * const lambda) {
int i;
double eps = tau/((double)n_int[S]);
double oneminus2lambda = (1.-2.*lambda[S]);
if(S == g_nr_of_psf) {
/* initialize the counter for the inverter */
count00=0; count01=0; count10=0; count11=0; count20=0; count21=0;
/* for(i=0;i<5;i++) { */
/* dtmp[i] = 0.; */
/* } */
}
if(S == 0) {
update_gauge(lambda[0]*eps);
for(i = 1; i < n_int[0]; i++) {
gauge_momenta(0.5*eps);
/* dtmp[0] += 0.5*eps; */
update_gauge(oneminus2lambda*eps);
gauge_momenta(0.5*eps);
/* dtmp[0] += 0.5*eps; */
update_gauge(2*lambda[0]*eps);
}
gauge_momenta(0.5*eps);
/* dtmp[0] += 0.5*eps; */
update_gauge(oneminus2lambda*eps);
gauge_momenta(0.5*eps);
/* dtmp[0] += 0.5*eps; */
update_gauge(lambda[0]*eps);
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
}
else {
for(i = 0; i < n_int[S]; i++) {
mn2p_integrator(n_int, lambda[S]*eps, S-1, lambda);
update_fermion_momenta(0.5*eps, S-1, 0);
/* dtmp[S] += 0.5*eps; */
mn2p_integrator(n_int, oneminus2lambda*eps, S-1, lambda);
update_fermion_momenta(0.5*eps, S-1, 0);
/* dtmp[S] += 0.5*eps; */
mn2p_integrator(n_int, lambda[S]*eps, S-1, lambda);
}
}
/* if(S == g_nr_of_psf) { */
/* for(i=0;i<5;i++) { */
/* printf("%d %e %e\n", i, dtmp[i], lambda[i]); */
/* } */
/* } */
}