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- /**
- ******************************************************************************
- * @file ctype.h
- * @author StarFive Technology
- * @version V1.0
- * @date 07/29/2020
- * @brief
- ******************************************************************************
- * @copy
- *
- * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
- * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
- * TIME. AS A RESULT, STARFIVE SHALL NOT BE HELD LIABLE FOR ANY
- * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
- * FROM THE CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
- * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
- *
- * COPYRIGHT 20120 Shanghai StarFive Technology Co., Ltd.
- */
- #ifndef _CTYPE_H
- #define _CTYPE_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)
- static inline int isdigit(int c)
- {
- return '0' <= c && c <= '9';
- }
- #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)
- #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)
- 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
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