blob: 7740443d98884e38bc6e171552774da633829790 (
plain) (
tree)
|
|
#ifndef _CTYPE_H
#define _CTYPE_H
/** @file
*
* Character types
*/
#define isdigit(c) ((c) >= '0' && (c) <= '9')
#define islower(c) ((c) >= 'a' && (c) <= 'z')
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
static inline unsigned char tolower(unsigned char c)
{
if (isupper(c))
c -= 'A'-'a';
return c;
}
static inline unsigned char toupper(unsigned char c)
{
if (islower(c))
c -= 'a'-'A';
return c;
}
#endif /* _CTYPE_H */
|