Function amount_msat_sub

common/amount.c:297–306

}

WARN_UNUSED_RESULT bool amount_msat_sub(struct amount_msat *val,
					struct amount_msat a,
					struct amount_msat b)
{
	if (a.millisatoshis < b.millisatoshis)
		return false;

	val->millisatoshis = a.millisatoshis - b.millisatoshis;
	return true;
}

WARN_UNUSED_RESULT bool amount_sat_add(struct amount_sat *val,
				       struct amount_sat a,