PK_FFOPRB_f_t   


typedef void (*PK_FFOPRB_f_t)(const int *guise,
                              const int *minsiz, const int *maxsiz,
                                    int *actsiz, int *strid, int *ifail);



  Open rollback file. This function is documented for legacy
  purposes only, and should not be implemented for new Parasolid applications.

Receives:
  int                      *guise          --- class of file: FFCROL (rollback)
  int                      *minsiz         --- minimum size of file (bytes)
  int                      *maxsiz         --- maximum size of file (bytes)

Returns:
  int                      *actsiz         --- actual size of file (bytes)
  int                      *strid          --- frustrum strid
  int                      *ifail          --- error code: FR_no_errors
                                           ---             FR_open_fail
                                           ---             FR_disc_full


Description:
  This function opens a new binary rollback file, returning a frustrum stream
  identifier or strid for use by FFREAD, FFWRIT, FFTELL, FFSEEK and FFCLOS.
  The file is allocated a length of between minsiz and maxsiz bytes, the
  actual size being returned in actsiz. The actual size is normally
  maxsiz bytes, but may be reduced, for example, to give a whole number of
  disc blocks or if insufficient disc space is available.