MP_DIGIT_BITS
#if MP_DIGIT_BITS == 32
dN = p[0] / MP_DIGIT_BITS;
d0 = n % MP_DIGIT_BITS;
d1 = MP_DIGIT_BITS - d0;
n /= MP_DIGIT_BITS;
d0 = p[0] % MP_DIGIT_BITS;
d1 = MP_DIGIT_BITS - d0;
d0 = p[0] % MP_DIGIT_BITS;
d1 = MP_DIGIT_BITS - d0;
n = p[k] / MP_DIGIT_BITS;
d0 = p[k] % MP_DIGIT_BITS;
d1 = MP_DIGIT_BITS - d0;
#if MP_DIGIT_BITS == 32