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.