SV_DENSITY

Sujith

SV means storage variable... no need to bother abt

if (NNULLP(THREAD_STORAGE(t,SV_DENSITY)))

dens = F_R(f,t); else

dens = C_R(c0,t0);

this code checks if density is stored at faces, if yes it will return the face density else it ll return the density at near by cell....