text: /*
   * Copyright (c) 1998 Sandia Corporation. Under the terms of Contract
   * DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government
   * retains certain rights in this software.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   * 
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   * 
   *     * Redistributions in binary form must reproduce the above
   *       copyright notice, this list of conditions and the following
   *       disclaimer in the documentation and/or other materials provided
   *       with the distribution.  
   * 
   *     * Neither the name of Sandia Corporation nor the names of its
   *       contributors may be used to endorse or promote products derived
   *       from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * 
   */
  /*****************************************************************************/
  /*****************************************************************************/
  /* Function(s) contained in this file:
   *
   *      ex_get_partial_node_set()
   *
   *****************************************************************************
   *
   *  Variable Index:
   *
   *      exoid               - The NetCDF ID of an already open NemesisI file.
   *      node_set_id        - ID of node set to read.
   *      start_node_num     - The starting index of the nodes to be read.
   *      num_nodes          - The number of nodes to read in.
   *      node_set_node_list - List of node IDs in node set.
   */
  /*****************************************************************************/
  /*****************************************************************************/
  /*****************************************************************************/
  #include <inttypes.h>                   // for PRId64
  #include <stddef.h>                     // for size_t
  #include <stdio.h>                      // for sprintf
  #include <sys/types.h>                  // for int64_t
  #include "exodusII.h"                   // for ex_err, exerrval, etc
  #include "exodusII_int.h"               // for EX_FATAL, EX_WARN, etc
  #include "netcdf.h"                     // for NC_NOERR, nc_inq_dimid, etc
  
  
  /*
   * reads the node list for a single node set
   */
  
  int ex_get_partial_node_set (int   exoid,
                         ex_entity_id node_set_id,
                         int64_t   start_node_num,
                         int64_t   num_nodes,
                         void_int  *node_set_node_list)
  {
    int     dimid, node_list_id, node_set_id_ndx, status;
    size_t  num_nodes_in_set, start[1], count[1];
    char errmsg[MAX_ERR_LENGTH];
  
    exerrval = 0; /* clear error code */
  
    /* first check if any node sets are specified */
  
    if ((status = nc_inq_dimid (exoid, DIM_NUM_NS, &dimid))  != NC_NOERR) {
      exerrval = status;
      sprintf(errmsg,
              "Warning: no node sets defined in file id %d",
              exoid);
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_WARN);
    }
  
    /* Lookup index of node set id in VAR_NS_IDS array */
    if ((node_set_id_ndx = ex_id_lkup(exoid, EX_NODE_SET, node_set_id)) < 0) {
      if (exerrval == EX_NULLENTITY) {
        sprintf(errmsg,
                "Warning: node set %"PRId64" is NULL in file id %d",
                node_set_id,exoid);
        ex_err("ex_get_partial_node_set",errmsg,EX_NULLENTITY);
        return (EX_WARN);
      } 
  
        sprintf(errmsg,
                "Error: failed to locate node set %"PRId64" in %s in file id %d",
                node_set_id,VAR_NS_IDS,exoid);
        ex_err("ex_get_partial_node_set",errmsg,exerrval);
        return (EX_FATAL);
      
    }
  
    /* inquire id's of previously defined dimensions and variables */
    if ((status = nc_inq_dimid (exoid, DIM_NUM_NOD_NS(node_set_id_ndx), &dimid)) != NC_NOERR) {
      exerrval = status;
      sprintf(errmsg,
           "Error: failed to locate number of nodes in node set %"PRId64" in file id %d",
              node_set_id,exoid);
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    if ((status = nc_inq_dimlen(exoid, dimid, &num_nodes_in_set)) != NC_NOERR) {
      exerrval = status;
      sprintf(errmsg,
              "Error: failed to get number of nodes in set %"PRId64" in file id %d",
              node_set_id, exoid);
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    /* Check input parameters for a valid range of numbers */
    if (start_node_num < 0 || start_node_num > num_nodes_in_set) {
      exerrval = EX_BADPARAM;
      sprintf(errmsg, "Error: Invalid input");
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    if (num_nodes < 0) {
      exerrval = EX_BADPARAM;
      sprintf(errmsg, "Error: Invalid number of nodes in nodes set!");
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    /* start_node_num now starts at 1, not 0 */
    if ((start_node_num + num_nodes - 1) > num_nodes_in_set) {
      exerrval = EX_BADPARAM;
      sprintf(errmsg, "Error: request larger than number of nodes in set!");
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    if ((status = nc_inq_varid (exoid, VAR_NODE_NS(node_set_id_ndx), &node_list_id)) != NC_NOERR) {
      exerrval = status;
      sprintf(errmsg,
              "Error: failed to locate node set %"PRId64" node list in file id %d",
              node_set_id,exoid);
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
  
    /* read in the node list array */
    start[0] = --start_node_num;
    count[0] = num_nodes;
  
    if (ex_int64_status(exoid) & EX_BULK_INT64_API) {
      status = nc_get_vara_longlong(exoid, node_list_id, start, count, node_set_node_list);
    } else {
      status = nc_get_vara_int(exoid, node_list_id, start, count, node_set_node_list);
    }
  
    if (status != NC_NOERR) {
      exerrval = status;
      sprintf(errmsg,
              "Error: failed to get node set node list in file id %d",
              exoid);
      ex_err("ex_get_partial_node_set",errmsg,exerrval);
      return (EX_FATAL);
    }
    return (EX_NOERR);
  }
  