diff
#define diff __diff_D2A
#define diff(magnitude) (a->fp_sign ? opposite_cc(magnitude) : (magnitude))
#define diff(magnitude) (a->fp_sign ? opposite_cc(magnitude) : (magnitude))
#define diff(t1, t2) (((t1).tv_sec - (t2).tv_sec) * 10 * hz + \
#undef diff
diff(struct a *a, struct b *b)
struct diff {