 	return 0;
 }
 
+int version(lua_State* L)
+{
+	printf("libadcensus version 0.0.5\n");
+	return 0;
+}
+
 static const struct luaL_Reg funcs[] = {
 	{"ad", ad},
 	{"census", census},

	__device__ float backward(float pos, float neg, int which) {
		float f = neg - pos + margin;
		if (which == 0) {
			return -1 * (f > 0);
		} else {
			return f > 0;
		}

	{"writePFM", writePFM},
	{"grey2jet", grey2jet},
	{"spatial_argmin", spatial_argmin},

	{"version", version},
	{NULL, NULL}
};

