2 // Copyright (c) 2010-2017 Intel Corporation
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
8 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
17 #ifndef _LUA_COMPAT_H_
18 #define _LUA_COMPAT_H_
24 #if LUA_VERSION_NUM < 503
26 static int lua_isinteger(lua_State *L, int idx)
28 if (!lua_isnumber(L, idx)) {
32 double whole = lua_tonumber(L, idx);
33 whole -= lua_tointeger(L, idx);
34 return whole < DBL_EPSILON && whole >= -DBL_EPSILON ;
38 #if LUA_VERSION_NUM < 502
39 static int lua_len(lua_State *L, int idx)
41 int len = lua_objlen(L, idx);
43 lua_pushnumber(L, len);
48 #endif /* _LUA_COMPAT_H_ */