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3cc52ea33c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120304 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
/*===-- include/System/DataTypes.h - Define fixed size types -----*- C -*-===*\
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|* *|
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|* The LLVM Compiler Infrastructure *|
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|* *|
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|* This file is distributed under the University of Illinois Open Source *|
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|* License. See LICENSE.TXT for details. *|
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|* *|
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|*===----------------------------------------------------------------------===*|
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|* *|
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|* This file contains definitions to figure out the size of _HOST_ data types.*|
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|* This file is important because different host OS's define different macros,*|
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|* which makes portability tough. This file exports the following *|
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|* definitions: *|
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|* *|
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|* [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
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|* [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values. *|
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|* *|
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|* No library is required when using these functions. *|
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|* *|
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|*===----------------------------------------------------------------------===*/
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/* Please leave this file C-compatible. */
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#ifndef SUPPORT_DATATYPES_H
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#define SUPPORT_DATATYPES_H
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#undef HAVE_SYS_TYPES_H
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#undef HAVE_INTTYPES_H
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#undef HAVE_STDINT_H
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#undef HAVE_UINT64_T
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#undef HAVE_U_INT64_T
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#ifdef __cplusplus
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#include <cmath>
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#else
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#include <math.h>
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#endif
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/* Note that this header's correct operation depends on __STDC_LIMIT_MACROS
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being defined. We would define it here, but in order to prevent Bad Things
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happening when system headers or C++ STL headers include stdint.h before we
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define it here, we define it on the g++ command line (in Makefile.rules). */
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#if !defined(__STDC_LIMIT_MACROS)
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# error "Must #define __STDC_LIMIT_MACROS before #including System/DataTypes.h"
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#endif
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#if !defined(__STDC_CONSTANT_MACROS)
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# error "Must #define __STDC_CONSTANT_MACROS before " \
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"#including System/DataTypes.h"
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#endif
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/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef _AIX
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#include "llvm/Support/AIXDataTypesFix.h"
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#endif
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/* Handle incorrect definition of uint64_t as u_int64_t */
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#ifndef HAVE_UINT64_T
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#ifdef HAVE_U_INT64_T
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typedef u_int64_t uint64_t;
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#else
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# error "Don't have a definition for uint64_t on this platform"
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#endif
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#endif
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#ifdef _OpenBSD_
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#define INT8_MAX 127
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#define INT8_MIN -128
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#define UINT8_MAX 255
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#define INT16_MAX 32767
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#define INT16_MIN -32768
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#define UINT16_MAX 65535
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#define INT32_MAX 2147483647
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#define INT32_MIN -2147483648
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#define UINT32_MAX 4294967295U
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#endif
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/* Set defaults for constants which we cannot find. */
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#if !defined(INT64_MAX)
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# define INT64_MAX 9223372036854775807LL
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#endif
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#if !defined(INT64_MIN)
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# define INT64_MIN ((-INT64_MAX)-1)
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#endif
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#if !defined(UINT64_MAX)
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# define UINT64_MAX 0xffffffffffffffffULL
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#endif
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#if __GNUC__ > 3
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#define END_WITH_NULL __attribute__((sentinel))
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#else
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#define END_WITH_NULL
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#endif
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#ifndef HUGE_VALF
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#define HUGE_VALF (float)HUGE_VAL
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#endif
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#endif /* SUPPORT_DATATYPES_H */
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