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- /*===---- limits.h - Standard header for integer sizes --------------------===*\
- *
- * Copyright (c) 2009 Chris Lattner
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- \*===----------------------------------------------------------------------===*/
- #ifndef __CLANG_LIMITS_H
- #define __CLANG_LIMITS_H
- /* The system's limits.h may, in turn, try to #include_next GCC's limits.h.
- Avert this #include_next madness. */
- #if defined __GNUC__ && !defined _GCC_LIMITS_H_
- #define _GCC_LIMITS_H_
- #endif
- /* System headers include a number of constants from POSIX in <limits.h>.
- Include it if we're hosted. */
- #if __STDC_HOSTED__ && __has_include_next(<limits.h>)
- #include_next <limits.h>
- #endif
- /* Many system headers try to "help us out" by defining these. No really, we
- know how big each datatype is. */
- #undef SCHAR_MIN
- #undef SCHAR_MAX
- #undef UCHAR_MAX
- #undef SHRT_MIN
- #undef SHRT_MAX
- #undef USHRT_MAX
- #undef INT_MIN
- #undef INT_MAX
- #undef UINT_MAX
- #undef LONG_MIN
- #undef LONG_MAX
- #undef ULONG_MAX
- #undef CHAR_BIT
- #undef CHAR_MIN
- #undef CHAR_MAX
- /* C90/99 5.2.4.2.1 */
- #define SCHAR_MAX __SCHAR_MAX__
- #define SHRT_MAX __SHRT_MAX__
- #define INT_MAX __INT_MAX__
- #define LONG_MAX __LONG_MAX__
- #define SCHAR_MIN (-__SCHAR_MAX__-1)
- #define SHRT_MIN (-__SHRT_MAX__ -1)
- #define INT_MIN (-__INT_MAX__ -1)
- #define LONG_MIN (-__LONG_MAX__ -1L)
- #define UCHAR_MAX (__SCHAR_MAX__*2 +1)
- #define USHRT_MAX (__SHRT_MAX__ *2 +1)
- #define UINT_MAX (__INT_MAX__ *2U +1U)
- #define ULONG_MAX (__LONG_MAX__ *2UL+1UL)
- #ifndef MB_LEN_MAX
- #define MB_LEN_MAX 1
- #endif
- #define CHAR_BIT __CHAR_BIT__
- #ifdef __CHAR_UNSIGNED__ /* -funsigned-char */
- #define CHAR_MIN 0
- #define CHAR_MAX UCHAR_MAX
- #else
- #define CHAR_MIN SCHAR_MIN
- #define CHAR_MAX __SCHAR_MAX__
- #endif
- /* C99 5.2.4.2.1: Added long long.
- C++11 18.3.3.2: same contents as the Standard C Library header <limits.h>.
- */
- #if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
- #undef LLONG_MIN
- #undef LLONG_MAX
- #undef ULLONG_MAX
- #define LLONG_MAX __LONG_LONG_MAX__
- #define LLONG_MIN (-__LONG_LONG_MAX__-1LL)
- #define ULLONG_MAX (__LONG_LONG_MAX__*2ULL+1ULL)
- #endif
- /* LONG_LONG_MIN/LONG_LONG_MAX/ULONG_LONG_MAX are a GNU extension. It's too bad
- that we don't have something like #pragma poison that could be used to
- deprecate a macro - the code should just use LLONG_MAX and friends.
- */
- #if defined(__GNU_LIBRARY__) ? defined(__USE_GNU) : !defined(__STRICT_ANSI__)
- #undef LONG_LONG_MIN
- #undef LONG_LONG_MAX
- #undef ULONG_LONG_MAX
- #define LONG_LONG_MAX __LONG_LONG_MAX__
- #define LONG_LONG_MIN (-__LONG_LONG_MAX__-1LL)
- #define ULONG_LONG_MAX (__LONG_LONG_MAX__*2ULL+1ULL)
- #endif
- #endif /* __CLANG_LIMITS_H */
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