S_PF1MSKSIZE
(((mask) >> S_PF1MSKSIZE*(n)) & M_PF1MSKSIZE)
#define V_PF1MSKSIZE(x) ((x) << S_PF1MSKSIZE)
#define G_PF1MSKSIZE(x) (((x) >> S_PF1MSKSIZE) & M_PF1MSKSIZE)