1 /* 2 * Copyright (c) 2006-2018, RT-Thread Development Team 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Change Logs: 7 * Date Author Notes 8 * 2008-08-14 Bernard the first version 9 */ 10 #ifndef __CTYPE_H__ 11 #define __CTYPE_H__ 12 13 int isprint(int c) __attribute__ ((__const__)); 14 int isalpha (int c) __attribute__ ((__const__)); 15 int isdigit (int ch) __attribute__ ((__const__)); 16 int isspace(int ch) __attribute__ ((__const__)); 17 18 #endif 19