Function lua_isnumber

third-party/lua-5.2.4/src/lapi.c:267–271

LUA_API int lua_isnumber (lua_State *L, int idx) {
  TValue n;
  const TValue *o = index2addr(L, idx);
  return tonumber(o, &n);
}


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