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Improve limits.h

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Fixes #84
See also #61
This commit is contained in:
Justine Tunney 2021-02-28 20:59:19 -08:00
parent 3c24c12068
commit 5e069a64d4
1 changed files with 52 additions and 39 deletions
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91
libc/limits.h
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@ -1,7 +1,16 @@
#ifndef COSMOPOLITAN_LIBC_LIMITS_H_ #ifndef COSMOPOLITAN_LIBC_LIMITS_H_
#define COSMOPOLITAN_LIBC_LIMITS_H_ #define COSMOPOLITAN_LIBC_LIMITS_H_
#define __MAX2MIN(I) (-I - 1) #define UCHAR_MIN 0
#define UCHAR_MAX 255
#if '\200' < 0
#define CHAR_MIN '\200'
#define CHAR_MAX '\177'
#else
#define CHAR_MIN '\0'
#define CHAR_MAX '\377'
#endif
#define SIZEOF_SHORT __SIZEOF_SHORT__ #define SIZEOF_SHORT __SIZEOF_SHORT__
#define SIZEOF_INT __SIZEOF_INT__ #define SIZEOF_INT __SIZEOF_INT__
@ -34,47 +43,49 @@
#define WCHAR_MAX __WCHAR_MAX__ #define WCHAR_MAX __WCHAR_MAX__
#define INTPTR_MAX __INTPTR_MAX__ #define INTPTR_MAX __INTPTR_MAX__
#define PTRDIFF_MAX __PTRDIFF_MAX__ #define PTRDIFF_MAX __PTRDIFF_MAX__
#define UINTPTR_MAX __UINTPTR_MAX__
#define UINT8_MAX __UINT8_MAX__
#define UINT16_MAX __UINT16_MAX__
#define UINT32_MAX __UINT32_MAX__
#define UINT64_MAX __UINT64_MAX__
#define SCHAR_MIN __MAX2MIN(SCHAR_MAX) #define SCHAR_MIN (-SCHAR_MAX - 1)
#define SHRT_MIN __MAX2MIN(SHRT_MAX) #define SHRT_MIN (-SHRT_MAX - 1)
#define INT_MIN __MAX2MIN(INT_MAX) #define INT_MIN (-INT_MAX - 1)
#define LONG_MIN __MAX2MIN(LONG_MAX) #define LONG_MIN (-LONG_MAX - 1)
#define LLONG_MIN __MAX2MIN(LLONG_MAX) #define LLONG_MIN (-LLONG_MAX - 1)
#define LONG_LONG_MIN __MAX2MIN(LONG_LONG_MAX) #define LONG_LONG_MIN (-LONG_LONG_MAX - 1)
#define SIZE_MIN __MAX2MIN(SIZE_MAX) #define SIZE_MIN (-SIZE_MAX - 1)
#define INT8_MIN __MAX2MIN(INT8_MAX) #define INT8_MIN (-INT8_MAX - 1)
#define INT16_MIN __MAX2MIN(INT16_MAX) #define INT16_MIN (-INT16_MAX - 1)
#define INT32_MIN __MAX2MIN(INT32_MAX) #define INT32_MIN (-INT32_MAX - 1)
#define INT64_MIN __MAX2MIN(INT64_MAX) #define INT64_MIN (-INT64_MAX - 1)
#define INTMAX_MIN __MAX2MIN(INTMAX_MAX) #define INTMAX_MIN (-INTMAX_MAX - 1)
#define INTPTR_MIN __MAX2MIN(INTPTR_MAX) #define INTPTR_MIN (-INTPTR_MAX - 1)
#define WINT_MIN __MAX2MIN(WINT_MAX) #define WINT_MIN (-WINT_MAX - 1)
#define WCHAR_MIN __MAX2MIN(WCHAR_MAX) #define WCHAR_MIN (-WCHAR_MAX - 1)
#define PTRDIFF_MIN __MAX2MIN(PTRDIFF_MAX) #define PTRDIFF_MIN (-PTRDIFF_MAX - 1)
#define USHRT_MAX (SHRT_MAX << 1 | 1) #define USHRT_MAX 65535
#define UINT_MAX (~0U) #define UINT_MAX 0xffffffffu
#define ULONG_MAX (~0LU) #if __SIZEOF_LONG__ == 8
#define ULLONG_MAX (~0LLU) #define ULONG_MAX 0xfffffffffffffffful
#define ULONG_LONG_MAX (~0LLU) #else
#define ULONG_MAX 0xfffffffful
#endif
#define ULLONG_MAX 0xffffffffffffffffull
#define ULONG_LONG_MAX 0xffffffffffffffffull
#define UINTPTR_MAX __UINTPTR_MAX__ #define USHRT_MIN 0
#define UINT8_MAX __UINT8_MAX__ #define UINT_MIN 0u
#define UINT16_MAX __UINT16_MAX__ #define ULONG_MIN 0ul
#define UINT32_MAX __UINT32_MAX__ #define ULLONG_MIN 0ull
#define UINT64_MAX __UINT64_MAX__ #define ULONG_LONG_MIN 0ull
#define UINT8_MIN 0
#define USHRT_MIN ((unsigned short)0) #define UINT16_MIN 0
#define UINT_MIN ((unsigned)0) #define UINT32_MIN 0u
#define ULONG_MIN ((unsigned long)0) #define UINT64_MIN 0ull
#define ULLONG_MIN ((unsigned long long)0) #define UINTPTR_MIN 0ull
#define ULONG_LONG_MIN ((unsigned long long)0)
#define UINT8_MIN ((uint8_t)0)
#define UINT16_MIN ((uint16_t)0)
#define UINT32_MIN ((uint32_t)0)
#define UINT64_MIN ((uint64_t)0)
#define UINTMAX_MIN ((uintmax_t)0)
#define UINTPTR_MIN ((uintptr_t)0)
#define MB_CUR_MAX 6 #define MB_CUR_MAX 6
#define MB_LEN_MAX 6 #define MB_LEN_MAX 6
@ -88,11 +99,13 @@
(((uintmax_t)0xffffffffffffffff) << 64 | (uintmax_t)0xffffffffffffffff) (((uintmax_t)0xffffffffffffffff) << 64 | (uintmax_t)0xffffffffffffffff)
#define INT128_MIN INTMAX_MIN #define INT128_MIN INTMAX_MIN
#define INT128_MAX INTMAX_MAX #define INT128_MAX INTMAX_MAX
#define UINTMAX_MIN ((uintmax_t)0)
#define UINT128_MIN ((uintmax_t)0) #define UINT128_MIN ((uintmax_t)0)
#define UINT128_MAX UINTMAX_MAX #define UINT128_MAX UINTMAX_MAX
#else #else
#define INTMAX_MAX __INT64_MAX__ #define INTMAX_MAX __INT64_MAX__
#define UINTMAX_MAX __UINT64_MAX__ #define UINTMAX_MAX __UINT64_MAX__
#define UINTMAX_MIN UINT64_MIN
#endif /* GCC 4.6+ */ #endif /* GCC 4.6+ */
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */ #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */