1#ifndef BOOT_ISDIGIT_H
 2
 3#define BOOT_ISDIGIT_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

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