BIGZEROP         2905 bignum.c           return BIGZEROP(x);
BIGZEROP         2921 bignum.c       	if (BIGZEROP(val)) return 0;
BIGZEROP         4561 bignum.c           if (BIGZEROP(x))
BIGZEROP         5993 bignum.c           if (BIGNUM_SIGN(x) != BIGNUM_SIGN(y) && !BIGZEROP(mod)) {
BIGZEROP         6185 bignum.c       	if ((BIGNUM_NEGATIVE_P(x) && !BIGZEROP(x)) && d != round(d))