[Minor] Add method to get MSE for ANN

diff --git a/src/lua/lua_fann.c b/src/lua/lua_fann.c
index d1f187510857fbe5ee83917d4bd1a68646fa48ac..d6dd921e776c8aa55a6c02f469ae90fb678b4f9e 100644 (file)
--- a/src/lua/lua_fann.c
+++ b/src/lua/lua_fann.c
@@ -45,6 +45,7 @@ LUA_FUNCTION_DEF (fann, save);
 LUA_FUNCTION_DEF (fann, data);
 LUA_FUNCTION_DEF (fann, get_inputs);
 LUA_FUNCTION_DEF (fann, get_outputs);
+LUA_FUNCTION_DEF (fann, get_mse);
 LUA_FUNCTION_DEF (fann, dtor);
 
 static const struct luaL_reg fannlib_f[] = {
@@ -63,6 +64,7 @@ static const struct luaL_reg fannlib_m[] = {
                LUA_INTERFACE_DEF (fann, data),
                LUA_INTERFACE_DEF (fann, get_inputs),
                LUA_INTERFACE_DEF (fann, get_outputs),
+               LUA_INTERFACE_DEF (fann, get_mse),
                {"__gc", lua_fann_dtor},
                {"__tostring", rspamd_lua_class_tostring},
                {NULL, NULL}
@@ -492,6 +494,30 @@ lua_fann_get_outputs (lua_State *L)
 #endif
 }
 
+/***
+ * @method rspamd_fann:get_mse()
+ * Returns mean square error for ANN
+ * @return {number} MSE value
+ */
+static gint
+lua_fann_get_mse (lua_State *L)
+{
+#ifndef WITH_FANN
+       return 0;
+#else
+       struct fann *f = rspamd_lua_check_fann (L, 1);
+
+       if (f != NULL) {
+               lua_pushnumber (L, fann_get_MSE (f));
+       }
+       else {
+               lua_pushnil (L);
+       }
+
+       return 1;
+#endif
+}
+
 /***
  * @method rspamd_fann:save(fname)
  * Save fann to file named 'fname'