NLADD
_i6[3] = NLADD(_i6[3], 1); \
_i6[2] = NLADD(_i6[2], 1); \
_i6[1] = NLADD(_i6[1], 1); \
_i6[0] = NLADD(_i6[0], 1); \
_d->i6[0] = NLADD(_s->i6[0], x); \
_d->i6[1] = NLADD(_d->i6[1], 1); \
_d->i6[2] = NLADD(_d->i6[2], 1); \
_d->i6[3] = NLADD(_d->i6[3], 1); \