llvm-project/libcxx/include/cctype

// -*- C++ -*-
//===---------------------------- cctype ----------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_CCTYPE
#define _LIBCPP_CCTYPE

/*
    cctype synopsis

namespace std
{

int isalnum(int c);
int isalpha(int c);
int isblank(int c);  // C99
int iscntrl(int c);
int isdigit(int c);
int isgraph(int c);
int islower(int c);
int isprint(int c);
int ispunct(int c);
int isspace(int c);
int isupper(int c);
int isxdigit(int c);
int tolower(int c);
int toupper(int c);

}  // std
*/

#include <__config>
#include <ctype.h>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

using ::isalnum;
using ::isalpha;
using ::isblank;
using ::iscntrl;
using ::isdigit;
using ::isgraph;
using ::islower;
using ::isprint;
using ::ispunct;
using ::isspace;
using ::isupper;
using ::isxdigit;
using ::tolower;
using ::toupper;

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_CCTYPE