text: /*
  ** libproj -- library of cartographic projections
  **
  ** Copyright (c) 2003, 2006   Gerald I. Evenden
  */
  static const char
  LIBPROJ_ID[] = "Id";
  /*
  ** 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 PROJ_LIB__
  # include  <lib_proj.h>
  PROJ_HEAD(fahey, "Fahey") "\n\tPcyl, Sph.";
  #define TOL 1e-6
  FORWARD(s_forward); /* spheroid */
    (void) P; /* avoid warning */
    xy.y = 1.819152 * ( xy.x = tan(0.5 * lp.phi) );
    xy.x = 0.819152 * lp.lam * proj_sqrt(1 - xy.x * xy.x);
    return (xy);
  }
  INVERSE(s_inverse); /* spheroid */
    (void) P; /* avoid warning */
    lp.phi = 2. * atan(xy.y /= 1.819152);
    lp.lam = fabs(xy.y = 1. - xy.y * xy.y) < TOL ? 0. :
      xy.x / (0.819152 * sqrt(xy.y));
    return (lp);
  }
  FREEUP; if (P) free(P); }
  ENTRY0(fahey) P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; ENDENTRY(P)
  /*
  ** Log: proj_fahey.c
  ** Revision 3.1  2006/01/11 01:38:18  gie
  ** Initial
  **
  */
  