limits.h

linux内核

/*
 * limits.h
 */

#ifndef _LIMITS_H
#define _LIMITS_H

#define CHAR_BIT	8
#define SHRT_BIT	16
#define INT_BIT		32
#define LONGLONG_BIT	64

#define SCHAR_MIN	(-128)
#define SCHAR_MAX	127
#define UCHAR_MAX	255

#ifdef __CHAR_UNSIGNED__
# define CHAR_MIN 0
# define CHAR_MAX UCHAR_MAX
#else
# define CHAR_MIN SCHAR_MIN
# define CHAR_MAX SCHAR_MAX
#endif

#define SHRT_MIN	(-32768)
#define SHRT_MAX	32767
#define USHRT_MAX	65535

#define INT_MIN		(-2147483647-1)
#define INT_MAX		2147483647
#define UINT_MAX	4294967295U

#define LONGLONG_MIN	(-9223372036854775807LL-1)
#define LONGLONG_MAX	9223372036854775807LL
#define ULONGLONG_MAX	18446744073709551615ULL

#include <bitsize/limits.h>

#endif /* _LIMITS_H */