GetBF              20 drivers/video/fbdev/nvidia/nv_type.h #define GetBF(var,mask) (((unsigned)((var) & MASKEXPAND(mask))) >> (0?mask) )
GetBF              35 drivers/video/fbdev/riva/nvreg.h #define GetBF(var,mask) (((unsigned)((var) & MASKEXPAND(mask))) >> (0?mask) )