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limits.h improvements

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This commit is contained in:
mintsuki 2023-02-18 12:56:32 +01:00
parent 8e8a82b5f7
commit 5ffeca8fa4
1 changed files with 17 additions and 7 deletions
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24
limits.h
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@ -1,34 +1,44 @@
#ifndef _LIMITS_H #ifndef _LIMITS_H
#define _LIMITS_H 1 #define _LIMITS_H 1
#ifndef __LIBC_C_JOIN
# define __LIBC_C_EXPAND_JOIN(x, suffix) x ## suffix
# define __LIBC_C_JOIN(x, suffix) __LIBC_C_EXPAND_JOIN(x, suffix)
#endif
#define CHAR_BIT __CHAR_BIT__ #define CHAR_BIT __CHAR_BIT__
#define SCHAR_MAX __SCHAR_MAX__ #define SCHAR_MAX __SCHAR_MAX__
#define SCHAR_MIN (-SCHAR_MAX - 1) #define SCHAR_MIN (-SCHAR_MAX - 1)
#define UCHAR_MAX ((unsigned char)SCHAR_MAX * 2 + 1) #define UCHAR_MAX (__LIBC_C_JOIN(SCHAR_MAX, U) * 2 + 1)
#define CHAR_MAX (((char)-1) > 0 ? UCHAR_MAX : SCHAR_MAX) #ifdef __CHAR_UNSIGNED__
#define CHAR_MIN (((char)-1) > 0 ? 0 : SCHAR_MIN) # define CHAR_MAX UCHAR_MAX
# define CHAR_MIN 0
#else
# define CHAR_MAX SCHAR_MAX
# define CHAR_MIN SCHAR_MIN
#endif
#define SHRT_MAX __SHRT_MAX__ #define SHRT_MAX __SHRT_MAX__
#define SHRT_MIN (-SHRT_MAX - 1) #define SHRT_MIN (-SHRT_MAX - 1)
#define USHRT_MAX ((unsigned short)SHRT_MAX * 2 + 1) #define USHRT_MAX (__LIBC_C_JOIN(SHRT_MAX, U) * 2 + 1)
#define INT_MAX __INT_MAX__ #define INT_MAX __INT_MAX__
#define INT_MIN (-INT_MAX - 1) #define INT_MIN (-INT_MAX - 1)
#define UINT_MAX ((unsigned int)INT_MAX * 2 + 1) #define UINT_MAX (__LIBC_C_JOIN(INT_MAX, U) * 2 + 1)
#define LONG_MAX __LONG_MAX__ #define LONG_MAX __LONG_MAX__
#define LONG_MIN (-LONG_MAX - 1) #define LONG_MIN (-LONG_MAX - 1)
#define ULONG_MAX ((unsigned long)LONG_MAX * 2 + 1) #define ULONG_MAX (__LIBC_C_JOIN(LONG_MAX, U) * 2 + 1)
#define LLONG_MAX __LONG_LONG_MAX__ #define LLONG_MAX __LONG_LONG_MAX__
#define LLONG_MIN (-LLONG_MAX - 1) #define LLONG_MIN (-LLONG_MAX - 1)
#define ULLONG_MAX ((unsigned long long)LLONG_MAX * 2 + 1) #define ULLONG_MAX (__LIBC_C_JOIN(LLONG_MAX, U) * 2 + 1)
#endif #endif