1 files changed, 4 insertions, 0 deletions
diff --git a/src/math.h b/src/math.h
index 8d058cc..e7b5249 100644
--- a/src/math.h
+++ b/src/math.h
@@ -24,4 +24,8 @@ c3_t c3_add(c3_t p1,c3_t p2);
 real distance3(c3_t p1,c3_t p2);
 void print_point(c3_t p);
 
+int isLeft(cs_t, cs_t, cs_t);
+int cn_PnPoly(cs_t, cs_t *, int);
+int wn_PnPoly(cs_t, cs_t *, int);
+
 #endif