_ctype.h

ICCAVR中所有的库函数源码

#ifndef ___CTYPE_H
#define ___CTYPE_H

#define BIT(i)	(1 << (i))

#define _U	BIT(0)
#define _L	BIT(1)
#define _D	BIT(2)
#define _X	BIT(3)
#define _S	BIT(4)
#define _C	BIT(5)
#define _P	BIT(6)
#define _B	BIT(7)

extern const unsigned char _ctype[1+256];

#define FUNC(name, mask)	\
	int name(int c) { return _ctype[c+1] & (mask); }

#endif