libstdc++: cctype Source File

libstdc++

cctype
Go to the documentation of this file.
1// -*- C++ -*- forwarding header.
2
3// Copyright (C) 1997-2026 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file include/cctype
26 * This is a Standard C++ Library file. You should @c \#include this file
27 * in your programs, rather than any of the @a *.h implementation files.
28 *
29 * This is the C++ version of the Standard C Library header @c ctype.h,
30 * and its contents are (mostly) the same as that header, but are all
31 * contained in the namespace @c std (except for names which are defined
32 * as macros in C).
33 */
34
35//
36// ISO C++ 14882: <ccytpe>
37//
38
39#ifndef _GLIBCXX_CCTYPE
40#define _GLIBCXX_CCTYPE 1
41
42#ifdef _GLIBCXX_SYSHDR
43#pragma GCC system_header
44#endif
45
46#include <bits/c++config.h>
47#include <ctype.h>
48
49// Get rid of those macros defined in <ctype.h> in lieu of real functions.
50#undef isalnum
51#undef isalpha
52#undef iscntrl
53#undef isdigit
54#undef isgraph
55#undef islower
56#undef isprint
57#undef ispunct
58#undef isspace
59#undef isupper
60#undef isxdigit
61#undef tolower
62#undef toupper
63
64namespace std
65{
66 using ::isalnum;
67 using ::isalpha;
68 using ::iscntrl;
69 using ::isdigit;
70 using ::isgraph;
71 using ::islower;
72 using ::isprint;
73 using ::ispunct;
74 using ::isspace;
75 using ::isupper;
76 using ::isxdigit;
77 using ::tolower;
78 using ::toupper;
79} // namespace std
80
81#if __cplusplus >= 201103L
82
83#ifdef _GLIBCXX_USE_C99_CTYPE
84
85#undef isblank
86
87namespace std
88{
89 using ::isblank;
90} // namespace std
91
92#endif // _GLIBCXX_USE_C99_CTYPE
93
94#endif // C++11
95
96#endif
c++config.h
std
ISO C++ entities toplevel namespace is std.
std::isgraph
bool isgraph(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::graph, __c).
Definition locale_facets.h:2675
std::isspace
bool isspace(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::space, __c).
Definition locale_facets.h:2615
std::isxdigit
bool isxdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::xdigit, __c).
Definition locale_facets.h:2663
std::islower
bool islower(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::lower, __c).
Definition locale_facets.h:2639
std::isdigit
bool isdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::digit, __c).
Definition locale_facets.h:2651
std::isblank
bool isblank(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::blank, __c).
Definition locale_facets.h:2682
std::toupper
_CharT toupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.toupper(__c).
Definition locale_facets.h:2689
std::isupper
bool isupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::upper, __c).
Definition locale_facets.h:2633
std::isalnum
bool isalnum(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alnum, __c).
Definition locale_facets.h:2669
std::ispunct
bool ispunct(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::punct, __c).
Definition locale_facets.h:2657
std::tolower
_CharT tolower(_CharT __c, const locale &__loc)
Convenience interface to ctype.tolower(__c).
Definition locale_facets.h:2695
std::isprint
bool isprint(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::print, __c).
Definition locale_facets.h:2621
std::isalpha
bool isalpha(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alpha, __c).
Definition locale_facets.h:2645
std::iscntrl
bool iscntrl(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::cntrl, __c).
Definition locale_facets.h:2627