Index: cdt.c
===================================================================
--- cdt.c	(revision 18137)
+++ cdt.c	(revision 18138)
@@ -18,21 +18,7 @@
 
 #define LEFTPOINT(p1, p2) ((p1)->pos.x < (p2)->pos.x || ((p1)->pos.x == (p2)->pos.x && (p1)->pos.y > (p2)->pos.y))
 
-#define ORIENT_CCW(a, b, c) (orientation(a, b, c) < 0)
-#define ORIENT_CW(a, b, c) (orientation(a, b, c) > 0)
-/* TODO: check epsilon for collinear case? */
-#define ORIENT_COLLINEAR(a, b, c) (orientation(a, b, c) == 0)
-#define ORIENT_CCW_CL(a, b, c) (orientation(a, b, c) <= 0)
-static double orientation(point_t *p1, point_t *p2, point_t *p3)
-{
-	return ((double)p2->pos.y - (double)p1->pos.y) * ((double)p3->pos.x - (double)p2->pos.x)
-				 - ((double)p2->pos.x - (double)p1->pos.x) * ((double)p3->pos.y - (double)p2->pos.y);
-}
 
-#define LINES_INTERSECT(p1, q1, p2, q2) \
-	(ORIENT_CCW(p1, q1, p2) != ORIENT_CCW(p1, q1, q2) && ORIENT_CCW(p2, q2, p1) != ORIENT_CCW(p2, q2, q1))
-
-
 static point_t *new_point(cdt_t *cdt, pos_t pos)
 {
 	point_t *p = *vtpoint_alloc_append(&cdt->points, 1);
Index: cdt.h
===================================================================
--- cdt.h	(revision 18137)
+++ cdt.h	(revision 18138)
@@ -38,4 +38,19 @@
 int cdt_check_delaunay(cdt_t *cdt, pointlist_node_t **point_violations, trianglelist_node_t **triangle_violations);
 void cdt_dump_animator(cdt_t *cdt, int show_circles, pointlist_node_t *point_violations, trianglelist_node_t *triangle_violations);
 
+
+#define ORIENT_CCW(a, b, c) (orientation(a, b, c) < 0)
+#define ORIENT_CW(a, b, c) (orientation(a, b, c) > 0)
+/* TODO: check epsilon for collinear case? */
+#define ORIENT_COLLINEAR(a, b, c) (orientation(a, b, c) == 0)
+#define ORIENT_CCW_CL(a, b, c) (orientation(a, b, c) <= 0)
+static inline double orientation(point_t *p1, point_t *p2, point_t *p3)
+{
+	return ((double)p2->pos.y - (double)p1->pos.y) * ((double)p3->pos.x - (double)p2->pos.x)
+				 - ((double)p2->pos.x - (double)p1->pos.x) * ((double)p3->pos.y - (double)p2->pos.y);
+}
+
+#define LINES_INTERSECT(p1, q1, p2, q2) \
+	(ORIENT_CCW(p1, q1, p2) != ORIENT_CCW(p1, q1, q2) && ORIENT_CCW(p2, q2, p1) != ORIENT_CCW(p2, q2, q1))
+
 #endif