text: /*
   * ISC License
   *
   * Copyright (C) 1988-2018 by
   *	Arjan van Genderen
   *	Simon de Graaf
   *	Nick van der Meijs
   * Delft University of Technology
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #define PREV(el,nA)  ((el)->parentA == nA ? ((el)->prevA) : ((el)->prevB))
  #define NEXT(el,nA)  ((el)->parentA == nA ? ((el)->nextA) : ((el)->nextB))
  #define APREV(el,nA) ((el)->parentA == nA ?(&(el)->prevA) :(&(el)->prevB))
  #define ANEXT(el,nA) ((el)->parentA == nA ?(&(el)->nextA) :(&(el)->nextB))
  #define OTHER(el,nA) ((el)->parentA == nA ? (el)->parentB : (el)->parentA)
  
  #define Grp(node) ((node) -> grp)
  
  #define CAP  1
  #define RES  2
  #define TOR  3
  
  #define JUN  4
  #define GJUN 5
  #define BJT  6
  
  #ifdef MOMENTS
  #define IND  7
  #endif
  
  #define C_LINEAR          1
  #define C_NON_LINEAR      2
  #define C_AREA            3
  #define C_AREA_PERIMETER  4
  #define C_SEPARATE        5
  
  