CLR
#define CLR(t, f) ((t) &= ~(f))
#define CLR(opt) (sp->fts_options &= ~(opt))
#define CLR(t, f) (t) &= ~(f)
#define CLR(seq) (A(seq) &= (~B(seq)))
#define CLR(bit) (A(bit) &= (~B(bit)))
#define CLR(t, f) ((t) &= ~(f))
#define CLR(t, f) ((t) &= ~(f))
#define CLR(t, f) ((t) &= ~(f))
#define CLR 8 /* reg appears twice in encoding */
#define CLR(t, f) (t) &= ~(f)