From 1683f0d624ad4c660f21bc0f050b9462face6e28 Mon Sep 17 00:00:00 2001
From: Ed Hartnett <edwardjameshartnett@gmail.com>
Date: Sat, 13 Jul 2019 14:47:22 -0600
Subject: [PATCH] moving fortran ncint functions to their own mod file

---
 src/flib/ncint_mod.F90 | 98 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 src/flib/ncint_mod.F90

diff --git a/src/flib/ncint_mod.F90 b/src/flib/ncint_mod.F90
new file mode 100644
index 00000000000..9bd5151a32b
--- /dev/null
+++ b/src/flib/ncint_mod.F90
@@ -0,0 +1,98 @@
+#include "config.h"
+!>
+!! @file
+!! Initialization Routines for PIO.
+!!
+!<
+
+!>
+!! @defgroup PIO_ncint NetCDF Integration
+!! Integrate netCDF and PIO code.
+!!
+module ncint_mod
+  use iso_c_binding
+  !--------------
+  use pio_kinds
+  !--------------
+  use pio_types, only : file_desc_t, iosystem_desc_t, var_desc_t, io_desc_t, &
+       pio_iotype_netcdf, pio_iotype_pnetcdf, pio_iotype_netcdf4p, pio_iotype_netcdf4c, &
+       pio_noerr, pio_rearr_subset, pio_rearr_opt_t
+  !--------------
+  use pio_support, only : piodie, debug, debugio, debugasync, checkmpireturn
+  use pio_nf, only : pio_set_log_level
+  use piolib_mod, only : pio_init
+  !
+
+#ifdef TIMING
+  use perf_mod, only : t_startf, t_stopf     ! _EXTERNAL
+#endif
+#ifndef NO_MPIMOD
+  use mpi    ! _EXTERNAL
+#endif
+  implicit none
+  private
+#ifdef NO_MPIMOD
+  include 'mpif.h'    ! _EXTERNAL
+#endif
+  ! !public member functions:
+
+  public :: nf_init_intracom
+
+  interface nf_init_intracom
+     module procedure nf_init_intracom
+  end interface nf_init_intracom
+
+contains
+
+  !>
+  !! @public
+  !! @ingroup PIO_init
+  !! Initialize the pio subsystem. This is a collective call. Input
+  !! parameters are read on comp_rank=0 values on other tasks are
+  !! ignored. This variation of PIO_init locates the IO tasks on a
+  !! subset of the compute tasks.
+  !!
+  !! @param comp_rank mpi rank of each participating task,
+  !! @param comp_comm the mpi communicator which defines the
+  !! collective.
+  !! @param num_iotasks the number of iotasks to define.
+  !! @param num_aggregator the mpi aggregator count
+  !! @param stride the stride in the mpi rank between io tasks.
+  !! @param rearr @copydoc PIO_rearr_method
+  !! @param iosystem a derived type which can be used in subsequent
+  !! pio operations (defined in PIO_types).
+  !! @param base @em optional argument can be used to offset the first
+  !! io task - default base is task 1.
+  !! @param rearr_opts the rearranger options.
+  !! @author Ed Hartnett
+  !<
+  subroutine nf_init_intracom(comp_rank, comp_comm, num_iotasks, num_aggregator, stride,  rearr, iosystem,base, rearr_opts)
+    use pio_types, only : pio_internal_error, pio_rearr_opt_t
+    use iso_c_binding
+
+    integer(i4), intent(in) :: comp_rank
+    integer(i4), intent(in) :: comp_comm
+    integer(i4), intent(in) :: num_iotasks
+    integer(i4), intent(in) :: num_aggregator
+    integer(i4), intent(in) :: stride
+    integer(i4), intent(in) :: rearr
+    type (iosystem_desc_t), intent(out)  :: iosystem  ! io descriptor to initalize
+    integer(i4), intent(in),optional :: base
+    type (pio_rearr_opt_t), intent(in), optional :: rearr_opts
+    integer :: ierr
+
+    interface
+       integer(C_INT) function nc_set_iosystem(iosystemid) &
+            bind(C,name="nc_set_iosystem")
+         use iso_c_binding
+         integer(C_INT), intent(in), value :: iosystemid
+       end function nc_set_iosystem
+    end interface
+
+    call PIO_init(comp_rank, comp_comm, num_iotasks, num_aggregator, stride,  rearr, iosystem,base, rearr_opts)
+
+    ierr = nc_set_iosystem(iosystem%iosysid)
+
+  end subroutine nf_init_intracom
+
+end module ncint_mod