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b209eda621
Summary: This is supposed to define the maximum bytes required to store a char in any locale. There's some question about what this should be set to. I believe because the proposed solution for `locale.h` is to only support the default locale, we should do what `musl` does and set it to `4` which covers up to UTF-32. Fixes https://github.com/llvm/llvm-project/issues/79358
239 lines
4.6 KiB
C
239 lines
4.6 KiB
C
//===-- Definition of macros from limits.h --------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_MACROS_LIMITS_MACROS_H
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#define LLVM_LIBC_MACROS_LIMITS_MACROS_H
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// Define all C23 macro constants of limits.h
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#ifndef CHAR_BIT
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#ifdef __CHAR_BIT__
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#define CHAR_BIT __CHAR_BIT__
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#else
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#define CHAR_BIT 8
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#endif // __CHAR_BIT__
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#endif // CHAR_BIT
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#ifndef MB_LEN_MAX
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// Represents a single UTF-32 wide character in the default locale.
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#define MB_LEN_MAX 4
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#endif // MB_LEN_MAX
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// *_WIDTH macros
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#ifndef CHAR_WIDTH
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#define CHAR_WIDTH CHAR_BIT
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#endif // CHAR_WIDTH
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#ifndef SCHAR_WIDTH
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#define SCHAR_WIDTH CHAR_BIT
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#endif // SCHAR_WIDTH
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#ifndef UCHAR_WIDTH
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#define UCHAR_WIDTH CHAR_BIT
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#endif // UCHAR_WIDTH
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#ifndef SHRT_WIDTH
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#ifdef __SHRT_WIDTH__
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#define SHRT_WIDTH __SHRT_WIDTH__
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#else
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#define SHRT_WIDTH 16
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#endif // __SHRT_WIDTH__
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#endif // SHRT_WIDTH
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#ifndef USHRT_WIDTH
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#define USHRT_WIDTH SHRT_WIDTH
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#endif // USHRT_WIDTH
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#ifndef INT_WIDTH
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#ifdef __INT_WIDTH__
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#define INT_WIDTH __INT_WIDTH__
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#else
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#define INT_WIDTH 32
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#endif // __INT_WIDTH__
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#endif // INT_WIDTH
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#ifndef UINT_WIDTH
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#define UINT_WIDTH INT_WIDTH
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#endif // UINT_WIDTH
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#ifndef LONG_WIDTH
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#ifdef __LONG_WIDTH__
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#define LONG_WIDTH __LONG_WIDTH__
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#elif defined(__WORDSIZE)
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#define LONG_WIDTH __WORDSIZE
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#else
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// Use __SIZEOF_LONG__ * CHAR_BIT as backup. This is needed for clang-13 or
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// before.
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#define LONG_WIDTH (__SIZEOF_LONG__ * CHAR_BIT)
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#endif // __LONG_WIDTH__
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#endif // LONG_WIDTH
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#ifndef ULONG_WIDTH
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#define ULONG_WIDTH LONG_WIDTH
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#endif // ULONG_WIDTH
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#ifndef LLONG_WIDTH
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#ifdef __LLONG_WIDTH__
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#define LLONG_WIDTH __LLONG_WIDTH__
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#else
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#define LLONG_WIDTH 64
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#endif // __LLONG_WIDTH__
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#endif // LLONG_WIDTH
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#ifndef ULLONG_WIDTH
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#define ULLONG_WIDTH LLONG_WIDTH
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#endif // ULLONG_WIDTH
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#ifndef BOOL_WIDTH
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#ifdef __BOOL_WIDTH__
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#define BOOL_WIDTH __BOOL_WIDTH__
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#else
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#define BOOL_WIDTH 1
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#endif // __BOOL_WIDTH__
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#endif // BOOL_WIDTH
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// *_MAX macros
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#ifndef SCHAR_MAX
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#ifdef __SCHAR_MAX__
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#define SCHAR_MAX __SCHAR_MAX__
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#else
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#define SCHAR_MAX 0x7f
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#endif // __SCHAR_MAX__
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#endif // SCHAR_MAX
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#ifndef UCHAR_MAX
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#define UCHAR_MAX (SCHAR_MAX * 2 + 1)
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#endif // UCHAR_MAX
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// Check if char is unsigned.
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#if !defined(__CHAR_UNSIGNED__) && ('\xff' > 0)
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#define __CHAR_UNSIGNED__
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#endif
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#ifndef CHAR_MAX
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#ifdef __CHAR_UNSIGNED__
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#define CHAR_MAX UCHAR_MAX
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#else
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#define CHAR_MAX SCHAR_MAX
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#endif // __CHAR_UNSIGNED__
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#endif // CHAR_MAX
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#ifndef SHRT_MAX
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#ifdef __SHRT_MAX__
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#define SHRT_MAX __SHRT_MAX__
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#else
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#define SHRT_MAX 0x7fff
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#endif // __SHRT_MAX__
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#endif // SHRT_MAX
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#ifndef USHRT_MAX
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#define USHRT_MAX (SHRT_MAX * 2U + 1U)
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#endif // USHRT_MAX
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#ifndef INT_MAX
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#ifdef __INT_MAX__
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#define INT_MAX __INT_MAX__
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#else
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#define INT_MAX (0 ^ (1 << (INT_WIDTH - 1)))
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#endif // __INT_MAX__
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#endif // INT_MAX
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#ifndef UINT_MAX
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#define UINT_MAX (INT_MAX * 2U + 1U)
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#endif // UINT_MAX
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#ifndef LONG_MAX
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#ifdef __LONG_MAX__
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#define LONG_MAX __LONG_MAX__
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#else
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#define LONG_MAX (0L ^ (1L << (LONG_WIDTH - 1)))
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#endif // __LONG_MAX__
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#endif // LONG_MAX
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#ifndef ULONG_MAX
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#define ULONG_MAX (LONG_MAX * 2UL + 1UL)
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#endif // ULONG_MAX
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#ifndef LLONG_MAX
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#ifdef __LONG_LONG_MAX__
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#define LLONG_MAX __LONG_LONG_MAX__
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#else
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#define LLONG_MAX (0LL ^ (1LL << (LLONG_WIDTH - 1)))
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#endif // __LONG_LONG_MAX__
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#endif // LLONG_MAX
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#ifndef ULLONG_MAX
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#define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
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#endif // ULLONG_MAX
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// *_MIN macros
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#ifndef SCHAR_MIN
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#define SCHAR_MIN (-SCHAR_MAX - 1)
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#endif // SCHAR_MIN
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#ifndef UCHAR_MIN
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#define UCHAR_MIN 0
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#endif // UCHAR_MIN
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#ifndef CHAR_MIN
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#ifdef __CHAR_UNSIGNED__
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#define CHAR_MIN UCHAR_MIN
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#else
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#define CHAR_MIN SCHAR_MIN
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#endif // __CHAR_UNSIGNED__
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#endif // CHAR_MIN
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#ifndef SHRT_MIN
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#define SHRT_MIN (-SHRT_MAX - 1)
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#endif // SHRT_MIN
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#ifndef USHRT_MIN
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#define USHRT_MIN 0U
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#endif // USHRT_MIN
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#ifndef INT_MIN
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#define INT_MIN (-INT_MAX - 1)
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#endif // INT_MIN
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#ifndef UINT_MIN
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#define UINT_MIN 0U
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#endif // UINT_MIN
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#ifndef LONG_MIN
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#define LONG_MIN (-LONG_MAX - 1L)
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#endif // LONG_MIN
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#ifndef ULONG_MIN
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#define ULONG_MIN 0UL
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#endif // ULONG_MIN
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#ifndef LLONG_MIN
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#define LLONG_MIN (-LLONG_MAX - 1LL)
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#endif // LLONG_MIN
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#ifndef ULLONG_MIN
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#define ULLONG_MIN 0ULL
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#endif // ULLONG_MIN
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#ifndef _POSIX_MAX_CANON
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#define _POSIX_MAX_CANON 255
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#endif
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#ifndef _POSIX_MAX_INPUT
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#define _POSIX_MAX_INPUT 255
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#endif
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#ifndef _POSIX_NAME_MAX
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#define _POSIX_PATH_MAX 256
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#endif
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#endif // LLVM_LIBC_MACROS_LIMITS_MACROS_H
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