typedef void (*PK_FSTOP_f_t)(int *ifail);



  Shut down the frustrum

Returns:
  int                      *ifail          --- error code: FR_no_errors


Description:
  This function shuts down the frustrum, and is called from kernel
  function PK_SESSION_stop. Calls to FSTART and FSTOP may be nested;
  in this case only the "outermost calls" (i.e. the first FSTART call,
  and the "balancing" FSTOP call) should have any effect.