Index: trunk/Ohana/src/opihi/lib.data/spline.c
===================================================================
--- trunk/Ohana/src/opihi/lib.data/spline.c	(revision 41340)
+++ trunk/Ohana/src/opihi/lib.data/spline.c	(revision 41341)
@@ -7,4 +7,7 @@
   float dy, dx, *tmp;
   
+  // spline is not valid with < 3 points
+  if (N < 3) return;
+
   ALLOCATE (tmp, float, N);
 
@@ -69,4 +72,7 @@
   opihi_flt dy, dx, *tmp;
   
+  // spline is not valid with < 3 points
+  if (N < 3) return;
+
   ALLOCATE (tmp, opihi_flt, N);