big_mul_add_vec
r[alen + i] = big_mul_add_vec(r + i, a, alen, b[i]);
#define BIG_MUL_ADD_VEC(r, a, len, digit) big_mul_add_vec(r, a, len, digit)
extern BIG_CHUNK_TYPE big_mul_add_vec(BIG_CHUNK_TYPE *r,
tr[tlen] = big_mul_add_vec(tr, ta + 1, tlen, ta[0]);
return (big_mul_add_vec(r, a, len, digit));
r[len + i] = big_mul_add_vec(r + i, a, len, a[i]);
return (big_mul_add_vec(r, a, len, digit));
r[len + i] = big_mul_add_vec(r + i, a, len, a[i]);
r[alen + i] = big_mul_add_vec(r + i, a, alen, b[i]);