Function lua_iscfunction

source/3rdparty/lua/src/lapi.c:261–264

LUA_API int lua_iscfunction (lua_State *L, int idx) {
  StkId o = index2addr(L, idx);
  return (ttislcf(o) || (ttisCclosure(o)));
}


LUA_API int lua_isnumber (lua_State *L, int idx) {