1 // Copyright 2016 The Fuchsia Authors
2 // Copyright (c) 2008 Travis Geiselbrecht
3 //
4 // Use of this source code is governed by a MIT-style
5 // license that can be found in the LICENSE file or at
6 // https://opensource.org/licenses/MIT
7 
8 #pragma once
9 
10 #include <zircon/compiler.h>
11 
12 __BEGIN_CDECLS
13 
14 int isalnum(int c);
15 int isalpha(int c);
16 int isblank(int c);
17 int iscntrl(int c);
18 int isdigit(int c);
19 int isgraph(int c);
20 int islower(int c);
21 int isprint(int c);
22 int ispunct(int c);
23 int isspace(int c);
24 int isupper(int c);
25 int isxdigit(int c);
26 
27 int tolower(int c);
28 int toupper(int c);
29 
30 __END_CDECLS
31