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16 changes: 12 additions & 4 deletions sorc/chgres_cube.fd/program_setup.f90
Original file line number Diff line number Diff line change
Expand Up @@ -144,11 +144,13 @@ module program_setup

!> Reads program configuration namelist.
!!
!! @param filename the name of the configuration file (defaults to ./fort.41).
!! @author George Gayno NCEP/EMC
subroutine read_setup_namelist

subroutine read_setup_namelist(filename)
implicit none


character(len=*), intent(in), optional :: filename
character(:), allocatable :: filename_to_use


integer :: is, ie, ierr
Expand Down Expand Up @@ -191,7 +193,13 @@ subroutine read_setup_namelist

print*,"- READ SETUP NAMELIST"

open(41, file="./fort.41", iostat=ierr)
if (present(filename)) then
filename_to_use = filename
else
filename_to_use = "./fort.41"
endif

open(41, file=filename_to_use, iostat=ierr)
if (ierr /= 0) call error_handler("OPENING SETUP NAMELIST.", ierr)
read(41, nml=config, iostat=ierr)
if (ierr /= 0) call error_handler("READING SETUP NAMELIST.", ierr)
Expand Down