Calls the external function that calculates some basic thermodynamic properties of the phases, used later for the definition of the ThermodynamicState and the calculation of all thermodynamic properties
pure function solveEOS input String opt; input Temperature x; input AbsolutePressure y; output Real T, p, gd, gh, gs, gCv, gCp, gDvp, gDvT, ld, lh, ls, lCv, lCp, lDvp, lDvT, gf; end solveEOS;