text: /******************************************************************************
   * Project:  PROJ.4
   * Purpose:  Built in datum list.
   * Author:   Frank Warmerdam, warmerda@home.com
   *
   ******************************************************************************
   * Copyright (c) 2000, Frank Warmerdam
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   *****************************************************************************/
  
  #define PJ_DATUMS__
  
  #include <projects.h>
  
  /* 
   * The ellipse code must match one from pj_ellps.c.  The datum id should
   * be kept to 12 characters or less if possible.  Use the official OGC 
   * datum name for the comments if available. 
   */
  
  C_NAMESPACE_VAR struct PJ_DATUMS pj_datums[] = {
  /* id       definition                               ellipse  comments */
  /* --       ----------                               -------  -------- */
  {"WGS84",   "towgs84=0,0,0",                         "WGS84", ""},
  {"GGRS87",  "towgs84=-199.87,74.79,246.62",          "GRS80",
                                                                "Greek_Geodetic_Reference_System_1987"},
  {"NAD83",   "towgs84=0,0,0",                         "GRS80",
                                                                "North_American_Datum_1983"},
  {"NAD27",   "nadgrids=@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat",
                                                       "clrk66",
                                                                "North_American_Datum_1927"},
  {"potsdam", "towgs84=598.1,73.7,418.2,0.202,0.045,-2.455,6.7",
                                                       "bessel",
                                                                "Potsdam Rauenberg 1950 DHDN"},
  {"carthage","towgs84=-263.0,6.0,431.0",              "clrk80ign",
                                                                "Carthage 1934 Tunisia"},
  {"hermannskogel",  "towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232",
                                                       "bessel",
                                                                "Hermannskogel"},
  {"ire65",   "towgs84=482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
                                                       "mod_airy",
                                                                "Ireland 1965"},
  {"nzgd49",  "towgs84=59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993",
                                                       "intl",  "New Zealand Geodetic Datum 1949"},
  {"OSGB36",  "towgs84=446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",
                                                       "airy",  "Airy 1830"},
  {NULL,      NULL,                                    NULL,    NULL}
  };
  
  struct PJ_DATUMS *pj_get_datums_ref()
  
  {
      return pj_datums;
  }
  
  C_NAMESPACE_VAR struct PJ_PRIME_MERIDIANS pj_prime_meridians[] = {
      /* id        definition                         */
      /* --        ----------                         */
      {"greenwich", "0dE"},
      {"lisbon",    "9d07'54.862\"W"},
      {"paris",     "2d20'14.025\"E"},
      {"bogota",    "74d04'51.3\"W"},
      {"madrid",    "3d41'16.58\"W"},
      {"rome",      "12d27'8.4\"E"},
      {"bern",      "7d26'22.5\"E"},
      {"jakarta",   "106d48'27.79\"E"},
      {"ferro",     "17d40'W"},
      {"brussels",  "4d22'4.71\"E"},
      {"stockholm", "18d3'29.8\"E"},
      {"athens",    "23d42'58.815\"E"},
      {"oslo",      "10d43'22.5\"E"},
      {NULL,        NULL}
  };
  
  struct PJ_PRIME_MERIDIANS *pj_get_prime_meridians_ref()
  
  {
      return pj_prime_meridians;
  }
  
  