dbl_sign
u.dblu_dbl.dbl_sign = v.dblu_dbl.dbl_sign;
v.dblu_dbl.dbl_sign = u.dblu_dbl.dbl_sign;
v.dblu_dbl.dbl_sign = u.dblu_dbl.dbl_sign;
*sign = u.dblu_dbl.dbl_sign;
dorounding(s0, ndigits, u.dblu_dbl.dbl_sign, decpt);
u.dblu_dbl.dbl_sign = 0;
dblu.dblu_dbl.dbl_sign != 0,
return (u.dblu_dbl.dbl_sign == 1);
u.dblu_dbl.dbl_sign = 0;
if (u[0].dblu_dbl.dbl_sign != u[1].dblu_dbl.dbl_sign)
return (u[u[0].dblu_dbl.dbl_sign].dblu_d);
if (u[0].dblu_dbl.dbl_sign != u[1].dblu_dbl.dbl_sign)
return (u[u[1].dblu_dbl.dbl_sign].dblu_d);
#define ext_sign dbl_sign
unsigned int dbl_sign:1;
unsigned int dbl_sign:1;
#define dblu_sign dblu_dbl.dbl_sign