Function msat_net

plugins/bkpr/bookkeeper.c:753–786

Net out credit/debit --> basically find the diff */

/* Net out credit/debit --> basically find the diff */
static char *msat_net(const tal_t *ctx,
		      struct amount_msat credit,
		      struct amount_msat debit,
		      struct amount_msat *credit_net,
		      struct amount_msat *debit_net)
{
	if (amount_msat_eq(credit, debit)) {
		*credit_net = AMOUNT_MSAT(0);
		*debit_net = AMOUNT_MSAT(0);
	} else if (amount_msat_greater(credit, debit)) {
		if (!amount_msat_sub(credit_net, credit, debit))
			return tal_fmt(ctx, "unexpected fail, can't sub."
				       " %s - %s",
				       type_to_string(ctx, struct amount_msat,
						      &credit),
				       type_to_string(ctx, struct amount_msat,
						      &debit));
		*debit_net = AMOUNT_MSAT(0);
	} else {
		if (!amount_msat_sub(debit_net, debit, credit)) {
			return tal_fmt(ctx, "unexpected fail, can't sub."
				       " %s - %s",
				       type_to_string(ctx,
					       struct amount_msat,
					       &debit),
				       type_to_string(ctx,
					       struct amount_msat,
					       &credit));
		}
		*credit_net = AMOUNT_MSAT(0);
	}

	return NULL;
}

static char *msat_find_diff(struct amount_msat balance,
			    struct amount_msat credits,