s_mpv_mul_d
void MPI_ASM_DECL s_mpv_mul_d(const mp_digit *a, mp_size a_len,
s_mpv_mul_d(MP_DIGITS(a), used, d, MP_DIGITS(a));
s_mpv_mul_d(MP_DIGITS(a), MP_USED(a), *pb++, MP_DIGITS(c));
s_mpv_mul_d(pa, count, d, MP_DIGITS(sqr) + 1);
s_mpv_mul_d(MP_DIGITS(a), useda, *pb++, MP_DIGITS(c));