DePierre/big-int — comment on commit 5636df35ca32f4f0314b8430dd3367494023d7ba
File: src/BigInt.c line 260
By DePierre:

sign = (a->l->length > b->l->length || (int)a->l->head->d >= (int)b->l->head->d) ? 1 : -1;