2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 export namespace std {
11 using std::isalnum _LIBCPP_USING_IF_EXISTS;
12 using std::isalpha _LIBCPP_USING_IF_EXISTS;
13 using std::isblank _LIBCPP_USING_IF_EXISTS;
14 using std::iscntrl _LIBCPP_USING_IF_EXISTS;
15 using std::isdigit _LIBCPP_USING_IF_EXISTS;
16 using std::isgraph _LIBCPP_USING_IF_EXISTS;
17 using std::islower _LIBCPP_USING_IF_EXISTS;
18 using std::isprint _LIBCPP_USING_IF_EXISTS;
19 using std::ispunct _LIBCPP_USING_IF_EXISTS;
20 using std::isspace _LIBCPP_USING_IF_EXISTS;
21 using std::isupper _LIBCPP_USING_IF_EXISTS;
22 using std::isxdigit _LIBCPP_USING_IF_EXISTS;
23 using std::tolower _LIBCPP_USING_IF_EXISTS;
24 using std::toupper _LIBCPP_USING_IF_EXISTS;