Function lua_isuserdata

Source/Misc/lua/src/lua.c:2122–2125

LUA_API int lua_isuserdata (lua_State *L, int idx) {
const TValue *o = index2adr(L, idx);
return (ttisuserdata(o) || ttislightuserdata(o));
}


LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {