1 files changed, 14 insertions, 2 deletions
diff --git a/graph.h b/graph.h
index 0b6c5c2..6a748ae 100644
--- a/graph.h
+++ b/graph.h
@@ -15,7 +15,7 @@ typedef struct {
 } Coordinates;
 
 bool
-valid(Graph2D* g, Coordinates c)
+graph_valid(Graph2D* g, Coordinates c)
 {
 	return c.x >= 0 && c.x < g->width && c.y >= 0 && c.y < g->height;
 }
@@ -23,7 +23,7 @@ valid(Graph2D* g, Coordinates c)
 /* Reads from the input until exhausted. Returns memory which must be
 freed by the caller. */
 Graph2D*
-ingest(FILE* in)
+graph_ingest(FILE* in)
 {
 	char *t = getall(in);
 	char *s = t;
@@ -71,3 +71,15 @@ ingest(FILE* in)
 	free(t);
 	return g;
 }
+
+void
+graph_free(Graph2D* g)
+{
+	for (int i = 0; i < g->height; i++) {
+		free(g->e[i]);
+		free(g->visited[i]);
+	}
+	free(g->e);
+	free(g->visited);
+	free(g);
+}