X-Git-Url: http://git.treefish.org/~alex/phys/heatbath.git/blobdiff_plain/dca762861c66d8782be31811822812d347ee4577..fbcd6adfcebeddc61aec5d95be85d8fb63226599:/obs_phip2_hist.hpp

diff --git a/obs_phip2_hist.hpp b/obs_phip2_hist.hpp
index 60c86b8..0f2ef32 100644
--- a/obs_phip2_hist.hpp
+++ b/obs_phip2_hist.hpp
@@ -41,17 +41,14 @@ void obs_phip2_hist::_meas(bool loadedobs, const int& nthmeas) {
     const double ppx = 2.*M_PI/O815->comargs.lsize[1] * ( 0 + int( kpimode/4. * O815->comargs.lsize[1] ) );
 
     if (!loadedobs) {
-      OM->phip2[ kpimode ] = 0;
-	
-      for (int ixt = 0; ixt < O815->comargs.lsize[0]; ixt++)
-	for (int ixx = 0; ixx < O815->comargs.lsize[1]; ixx++)
-	  for (int ixpt = 0; ixpt < O815->comargs.lsize[0]; ixpt++)
-	    for (int ixpx = 0; ixpx < O815->comargs.lsize[1]; ixpx++)
-	      OM->phip2[ kpimode ] += real( conj( Sim->conf[ ixt*O815->comargs.lsize[1] + ixx ].phi )
-					    * Sim->conf[ ixpt*O815->comargs.lsize[1] + ixpx ].phi
-					    * exp ( _i_*(double)ppx*(double)(ixx-ixpx) + _i_*(double)ppt*(double)(ixt-ixpt) ) );
-	
-      OM->phip2[ kpimode ] /= Sim->LSIZE2;
+      complex<double> phitildepp = 0;
+      
+      for (int ixpt = 0; ixpt < O815->comargs.lsize[0]; ixpt++)
+	for (int ixpx = 0; ixpx < O815->comargs.lsize[1]; ixpx++)
+	  phitildepp += Sim->conf[ ixpt*O815->comargs.lsize[1] + ixpx ].phi 
+	    * exp ( - _i_*(double)ppx*(double)ixpx - _i_*(double)ppt*(double)ixpt );
+      
+      OM->phip2[ kpimode ] = norm( phitildepp) / Sim->LSIZE2;
     }
     
     *out << O815->paraQ->getParaVals();