1 /******************************************************************************
2 * Copyright (c) 2004, 2008 IBM Corporation
3 * All rights reserved.
4 * This program and the accompanying materials
5 * are made available under the terms of the BSD License
6 * which accompanies this distribution, and is available at
7 * http://www.opensource.org/licenses/bsd-license.php
8 *
9 * Contributors:
10 * IBM Corporation - initial implementation
11 *****************************************************************************/
12
13 #include <ctype.h>
14
isdigit(int ch)15 int isdigit(int ch)
16 {
17 switch (ch) {
18 case '0': case '1': case '2': case '3': case '4':
19 case '5': case '6': case '7': case '8': case '9':
20 return 1;
21
22 default:
23 return 0;
24 }
25 }
26