! integers specifying which independent variables to use in eoscalc

  integer, parameter :: ilnrho_ss=1, ilnrho_ee=2, ilnrho_pp=3
  integer, parameter :: ilnrho_lnTT=4, ilnrho_cs2=5
  integer, parameter :: irho_cs2=6, irho_ss=7, irho_lnTT=8, ilnrho_TT=9
  integer, parameter :: irho_TT=10, ipp_ss=11, ipp_cs2=12
  integer, parameter :: irho_eth=13, ilnrho_eth=14, irho_ee=15, irho_pp=16