void resizeNurseries ( nat blocks );
void resizeNurseriesFixed ( nat blocks );
lnat countNurseryBlocks ( void );
void resizeNurseries ( nat blocks );
void resizeNurseriesFixed ( nat blocks );
lnat countNurseryBlocks ( void );
lnat calcLiveBlocks (void);
lnat calcLiveWords (void);
lnat countOccupied (bdescr *bd);
lnat calcLiveBlocks (void);
lnat calcLiveWords (void);
lnat countOccupied (bdescr *bd);