Function set_node_bias

plugins/askrene/layer.c:352–395

}

static const struct node_bias *set_node_bias(struct layer *layer,
					     const struct node_id *node,
					     const char *description TAKES,
					     s8 bias_factor,
					     bool relative,
					     bool dir_out,
					     u64 timestamp)
{
	struct node_bias *bias;

	bias = node_bias_hash_get(layer->node_biases, node);
	if (!bias) {
		bias = tal(layer, struct node_bias);
		bias->node = *node;
		node_bias_hash_add(layer->node_biases, bias);
		bias->in_bias = 0;
		bias->out_bias = 0;
	} else {
		tal_free(bias->description);
	}
	bias->description = tal_strdup_or_null(bias, description);
	bias->timestamp = timestamp;

	if (dir_out) {
		int bias_new =
		    relative ? bias->out_bias + bias_factor : bias_factor;
		bias_new = MIN(100, bias_new);
		bias_new = MAX(-100, bias_new);
		bias->out_bias = bias_new;
	} else {
		int bias_new =
		    relative ? bias->in_bias + bias_factor : bias_factor;
		bias_new = MIN(100, bias_new);
		bias_new = MAX(-100, bias_new);
		bias->in_bias = bias_new;
	}

	/* Don't bother keeping around zero biases */
	if (bias->in_bias == 0 && bias->out_bias == 0) {
		node_bias_hash_del(layer->node_biases, bias);
		bias = tal_free(bias);
	}
	return bias;
}

static void add_disabled_node(struct layer *layer, const struct node_id *node)
{