1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef BOOT_CTYPE_H
3#define BOOT_CTYPE_H
4
5static inline int isdigit(int ch)
6{
7 return (ch >= '0') && (ch <= '9');
8}
9
10static inline int isxdigit(int ch)
11{
12 if (isdigit(ch))
13 return true;
14
15 if ((ch >= 'a') && (ch <= 'f'))
16 return true;
17
18 return (ch >= 'A') && (ch <= 'F');
19}
20
21#endif
22

source code of linux/arch/x86/boot/ctype.h