Index: Makefile
===================================================================
--- Makefile	(revision 33225)
+++ Makefile	(revision 33226)
@@ -1,4 +1,4 @@
-CFLAGS=-Wall -O0 -g3 -I. -I../../../src_3rd
+CFLAGS=-Wall -O0 -g3 -I. -I.. -I../..
 LDFLAGS=-lm
 
 cdt_test: cdt_test.o cdt.o point.o edge.o triangle.o
Index: cdt_test.c
===================================================================
--- cdt_test.c	(revision 33225)
+++ cdt_test.c	(revision 33226)
@@ -2,19 +2,6 @@
 #include <time.h>
 #include "cdt.h"
 
-#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))
-
 cdt_t cdt;
 
 int main(void)