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 /*@@
   @file      GRHydro_Startup.F90
   @date      Sun Feb 10 00:02:52 2002
   @author    Ian Hawke
   @desc 
   Startup banner.
   @enddesc 
 @@*/

#include "cctk.h"
#include "cctk_Parameters.h"
#include "cctk_Functions.h"

#include "util_ErrorCodes.h"
#include "util_Table.h"

 /*@@
   @routine    GRHydro_Startup
   @date       Sun Feb 10 00:03:09 2002
   @author     Ian Hawke
   @desc 
   Startup banner.
   @enddesc 
   @calls     
   @calledby   
   @history 
 
   @endhistory 

@@*/

integer function GRHydro_Startup()

  USE GRHydro_Scalars

  implicit none

  DECLARE_CCTK_PARAMETERS
  DECLARE_CCTK_FUNCTIONS
  
  CCTK_INT :: ierr, flags, table_handle, var, strlen, strend, n_base_indep_gfs
  CCTK_INT, dimension(:), allocatable :: indep_gfs
  CCTK_INT, dimension(4) :: dep_gfs
  character(len=256) :: eos_name_param, var_names_param, var_names, var_gfs

  call CCTK_RegisterBanner(ierr, "GRHydro: relativistic hydrodynamics, no ice.")
  
!!$ The number of independent variables is different in the polytropic or general case
  if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then
    n_base_indep_gfs = 1
  else
    n_base_indep_gfs = 2
  end if

  allocate(indep_gfs(n_base_indep_gfs + eosgeneral_n_indeps))


!!$  Set up EOS calls.

  if (use_eosgeneral .ne. 0) then

!!$    First, set up the minimum pressure

    eosgeneral_pmin = 1.d-28

!!$    First, "Plus" boundary extended
  
    flags = UTIL_TABLE_FLAGS_CASE_INSENSITIVE
    
    call Util_TableCreate(table_handle, flags)
    
    call CCTK_FortranString(strlen, eosgeneral_name, eos_name_param)
    eos_name_param = trim(eos_name_param)
    call Util_TableSetString(ierr, table_handle, &
         eos_name_param, "EOS Name")
    call CCTK_FortranString(strlen, eosgeneral_indep_names, &
         var_names_param)
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then
      var_names = "Rho "//var_names_param(1:strlen)
    else
      var_names = "Rho SpecificInternalEnergy "//var_names_param(1:strlen)
    end if
    var_names = trim(var_names)
    call Util_TableSetString(ierr, table_handle, &
         var_names, "Independent variable names")
    call Util_TableSetString(ierr, table_handle, &
         "Pressure DPressureDSpecificInternalEnergy c_s^2", &
         "Dependent variable names")
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then
      call Util_TableSetInt(ierr, table_handle, &
           1 + eosgeneral_n_indeps, "N independent variables")
    else
      call Util_TableSetInt(ierr, table_handle, &
           2 + eosgeneral_n_indeps, "N independent variables")
    end if
    call Util_TableSetInt(ierr, table_handle, &
         3, "N dependent variables")

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhoplus")
    else
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhoplus")
      call CCTK_VarIndex(indep_gfs(2), "GRHydro::epsplus")
    end if
    call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressplus")
    call CCTK_VarIndex(dep_gfs(2), "GRHydro::eos_dpdeps_p")
    call CCTK_VarIndex(dep_gfs(3), "GRHydro::eos_cs2_p")
    
    call CCTK_FortranString(strlen, eosgeneral_indep_plus_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
      
    end do
    
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
    end if
    call Util_TableSetIntArray(ierr, table_handle, 3, dep_gfs, &
         "Dependent GFs")
    
    EOS_RiemannCallPlus = EOS_SetupCall(table_handle)

!!$    Second, "Minus" boundary extended
!!$    Many of the table entries are the same
    
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhominus")
    else
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhominus")
      call CCTK_VarIndex(indep_gfs(2), "GRHydro::epsminus")
    end if
    call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressminus")
    call CCTK_VarIndex(dep_gfs(2), "GRHydro::eos_dpdeps_m")
    call CCTK_VarIndex(dep_gfs(3), "GRHydro::eos_cs2_m")

    call CCTK_FortranString(strlen, eosgeneral_indep_minus_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
      
    end do
        
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
    end if
    call Util_TableSetIntArray(ierr, table_handle, 3, dep_gfs, &
         "Dependent GFs")
    
    EOS_RiemannCallMinus = EOS_SetupCall(table_handle)

!!$    Third, the "Average" state for the Roe solver
    
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rho_ave")
    else
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rho_ave")
      call CCTK_VarIndex(indep_gfs(2), "GRHydro::eps_ave")
    end if
    call CCTK_VarIndex(dep_gfs(1), "GRHydro::press_ave")
    call CCTK_VarIndex(dep_gfs(2), "GRHydro::eos_dpdeps_ave")
    call CCTK_VarIndex(dep_gfs(3), "GRHydro::eos_cs2_ave")
    
    call CCTK_FortranString(strlen, eosgeneral_indep_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
        
    end do
    
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
    end if
    call Util_TableSetIntArray(ierr, table_handle, 3, dep_gfs, &
         "Dependent GFs")
    
    EOS_RoeAverageCall = EOS_SetupCall(table_handle)

!!$    Fourth, the "Con2Prim" call.
!!$    This sets different variables.

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "HydroBase::rho")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure DPressureDSpecificInternalEnergy DPressureDRho SpecificInternalEnergy", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "HydroBase::press")
      call CCTK_VarIndex(dep_gfs(2), "GRHydro::eos_dpdeps_temp")
      call CCTK_VarIndex(dep_gfs(3), "GRHydro::eos_dpdrho_temp")
      call CCTK_VarIndex(dep_gfs(4), "HydroBase::eps")
    else
      call CCTK_VarIndex(indep_gfs(1), "HydroBase::rho")
      call CCTK_VarIndex(indep_gfs(2), "HydroBase::eps")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure DPressureDSpecificInternalEnergy DPressureDRho", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "HydroBase::press")
      call CCTK_VarIndex(dep_gfs(2), "GRHydro::eos_dpdeps_temp")
      call CCTK_VarIndex(dep_gfs(3), "GRHydro::eos_dpdrho_temp")
    end if

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 4, dep_gfs, &
           "Dependent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 3, dep_gfs, &
           "Dependent GFs")
    end if
    
    EOS_Con2PrimCall = EOS_SetupCall(table_handle)

!!$    Fifth, the "Prim2Con" (boundary) calls.
!!$    Again, different variables are set.

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhominus")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure SpecificInternalEnergy", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressminus")
      call CCTK_VarIndex(dep_gfs(2), "GRHydro::epsminus")
    else
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhominus")
      call CCTK_VarIndex(indep_gfs(2), "GRHydro::epsminus")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressminus")
    end if

    call CCTK_FortranString(strlen, eosgeneral_indep_minus_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
        
    end do
    
    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 2, dep_gfs, &
           "Dependent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 1, dep_gfs, &
           "Dependent GFs")
    end if
    
    EOS_Prim2ConBndCallMinus = EOS_SetupCall(table_handle)

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhoplus")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure SpecificInternalEnergy", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressplus")
      call CCTK_VarIndex(dep_gfs(2), "GRHydro::epsplus")
    else
      call CCTK_VarIndex(indep_gfs(1), "GRHydro::rhoplus")
      call CCTK_VarIndex(indep_gfs(2), "GRHydro::epsplus")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "GRHydro::pressplus")
    end if

    call CCTK_FortranString(strlen, eosgeneral_indep_plus_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
        
    end do

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 2, dep_gfs, &
           "Dependent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 1, dep_gfs, &
           "Dependent GFs")
    end if
    
    EOS_Prim2ConBndCallPlus = EOS_SetupCall(table_handle)

!!$    Sixth, the Prim2Con (cell centre) calls

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call CCTK_VarIndex(indep_gfs(1), "HydroBase::rho")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure SpecificInternalEnergy", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "HydroBase::press")
      call CCTK_VarIndex(dep_gfs(2), "HydroBase::eps")
    else
      call CCTK_VarIndex(indep_gfs(1), "HydroBase::rho")
      call CCTK_VarIndex(indep_gfs(2), "HydroBase::eps")
      call Util_TableSetString(ierr, table_handle, &
           "Pressure", &
           "Dependent variable names")
      call CCTK_VarIndex(dep_gfs(1), "HydroBase::press")
    end if

    call CCTK_FortranString(strlen, eosgeneral_indep_gfs, var_gfs)
    var_gfs = trim(var_gfs)
    
    strend = 1
    
    do var = 1, eosgeneral_n_indeps
      
      strend = scan(var_gfs, " ")
      if (strend > 0) then
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs(1:strend) )
        var_gfs = var_gfs(strend+1:)
      else
        if (var .ne. eosgeneral_n_indeps) then
          call CCTK_WARN(0, "Something wrong in the eos string")
        end if
        call CCTK_VarIndex( indep_gfs(n_base_indep_gfs+var), var_gfs )
      end if
        
    end do

    if (CCTK_EQUALS(GRHydro_eos_type, "Polytype")) then    
      call Util_TableSetIntArray(ierr, table_handle, 1 + eosgeneral_n_indeps, &
           indep_gfs(1:1 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 2, dep_gfs, &
           "Dependent GFs")
    else
      call Util_TableSetIntArray(ierr, table_handle, 2 + eosgeneral_n_indeps, &
           indep_gfs(1:2 + eosgeneral_n_indeps), "Independent GFs")
      call Util_TableSetIntArray(ierr, table_handle, 1, dep_gfs, &
           "Dependent GFs")
    end if
    
    EOS_Prim2ConCellsCall = EOS_SetupCall(table_handle)

  end if

  deallocate(indep_gfs)
  
  GRHydro_Startup = 0

end function GRHydro_Startup