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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_CTYPE_H#define _LINUX_CTYPE_H
#include <linux/compiler.h>
/* * NOTE! This ctype does not handle EOF like the standard C * library is required to. */
#define _U 0x01 /* upper */#define _L 0x02 /* lower */#define _D 0x04 /* digit */#define _C 0x08 /* cntrl */#define _P 0x10 /* punct */#define _S 0x20 /* white space (space/lf/tab) */#define _X 0x40 /* hex digit */#define _SP 0x80 /* hard space (0x20) */
extern const unsigned char _ctype[];
#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
#define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0)#define isalpha(c) ((__ismask(c)&(_U|_L)) != 0)#define iscntrl(c) ((__ismask(c)&(_C)) != 0)#define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0)#define islower(c) ((__ismask(c)&(_L)) != 0)#define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)#define ispunct(c) ((__ismask(c)&(_P)) != 0)/* Note: isspace() must return false for %NUL-terminator */#define isspace(c) ((__ismask(c)&(_S)) != 0)#define isupper(c) ((__ismask(c)&(_U)) != 0)#define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)
#define isascii(c) (((unsigned char)(c))<=0x7f)#define toascii(c) (((unsigned char)(c))&0x7f)
#if __has_builtin(__builtin_isdigit)#define isdigit(c) __builtin_isdigit(c)#elsestatic inline int isdigit(int c){ return '0' <= c && c <= '9';}#endif
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;}
#define tolower(c) __tolower(c)#define toupper(c) __toupper(c)
/* * Fast implementation of tolower() for internal usage. Do not use in your * code. */static inline char _tolower(const char c){ return c | 0x20;}
/* Fast check for octal digit */static inline int isodigit(const char c){ return c >= '0' && c <= '7';}
#endif