1//===-- Implementation of iscntrl------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/ctype/iscntrl.h"
10
11#include "src/__support/common.h"
12
13namespace LIBC_NAMESPACE {
14
15// TODO: Currently restricted to default locale.
16// These should be extended using locale information.
17LLVM_LIBC_FUNCTION(int, iscntrl, (int c)) {
18 const unsigned ch = static_cast<unsigned>(c);
19 return static_cast<int>(ch < 0x20 || ch == 0x7f);
20}
21
22} // namespace LIBC_NAMESPACE
23

source code of libc/src/ctype/iscntrl.cpp