text: /******************************************************************************
   * Project:  PROJ.4
   * Purpose:  Stub projection implementation for lat/long coordinates. We 
   *           don't actually change the coordinates, but we want proj=latlong
   *           to act sort of like a projection.
   * Author:   Frank Warmerdam, warmerdam@pobox.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.
   *****************************************************************************/
  
  /* very loosely based upon DMA code by Bradford W. Drew */
  #define PJ_LIB__
  #include	<projects.h>
  PROJ_HEAD(lonlat, "Lat/long (Geodetic)")  "\n\t";
  PROJ_HEAD(latlon, "Lat/long (Geodetic alias)")  "\n\t";
  PROJ_HEAD(latlong, "Lat/long (Geodetic alias)")  "\n\t";
  PROJ_HEAD(longlat, "Lat/long (Geodetic alias)")  "\n\t";
  
  FORWARD(forward);
  
          xy.x = lp.lam / P->a;
          xy.y = lp.phi / P->a;
          return xy;
  }
  INVERSE(inverse);
  
          lp.phi = xy.y * P->a;
          lp.lam = xy.x * P->a;
          return lp;
  }
  FREEUP; if (P) pj_dalloc(P); }
  
  ENTRY0(latlong)
          P->is_latlong = 1;
          P->x0 = 0.0;
          P->y0 = 0.0;
  	P->inv = inverse; P->fwd = forward;
  ENDENTRY(P)
  
  ENTRY0(longlat)
          P->is_latlong = 1;
          P->x0 = 0.0;
          P->y0 = 0.0;
  	P->inv = inverse; P->fwd = forward;
  ENDENTRY(P)
  
  ENTRY0(latlon)
          P->is_latlong = 1;
          P->x0 = 0.0;
          P->y0 = 0.0;
  	P->inv = inverse; P->fwd = forward;
  ENDENTRY(P)
  
  ENTRY0(lonlat)
          P->is_latlong = 1;
          P->x0 = 0.0;
          P->y0 = 0.0;
  	P->inv = inverse; P->fwd = forward;
  ENDENTRY(P)
  