LMMANT
ull_x0 = (ull_y0 & LMMANT) | LDONE;
ull_y0 &= LMMANT; \
ull_x##I = ((ull_ax##I & LMMANT) | LDONE); \
unsigned long long LMMANT = ((unsigned long long*)LCONST)[4]; /* 0x000fffffffffffff */