llvm/include/llvm-c/DataTypes.h

   1 /*===-- include/llvm-c/DataTypes.h - Define fixed size types ------*- C -*-===*\
   2 |*                                                                            *|
   3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
   4 |* Exceptions.                                                                *|
   5 |* See https://llvm.org/LICENSE.txt for license information.                  *|
   6 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
   7 |*                                                                            *|
   8 |*===----------------------------------------------------------------------===*|
   9 |*                                                                            *|
  10 |* This file contains definitions to figure out the size of _HOST_ data types.*|
  11 |* This file is important because different host OS's define different macros,*|
  12 |* which makes portability tough.  This file exports the following            *|
  13 |* definitions:                                                               *|
  14 |*                                                                            *|
  15 |*   [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
  16 |*   [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.     *|
  17 |*                                                                            *|
  18 |* No library is required when using these functions.                         *|
  19 |*                                                                            *|
  20 |*===----------------------------------------------------------------------===*/
  21
  22 /* Please leave this file C-compatible. */
  23
  24 #ifndef LLVM_C_DATATYPES_H
  25 #define LLVM_C_DATATYPES_H
  26
  27 #include <inttypes.h>
  28 #include <stdint.h>
  29
  30 #ifndef _MSC_VER
  31
  32 #if !defined(UINT32_MAX)
  33 # error "The standard header <cstdint> is not C++11 compliant. Must #define "\
  34         "__STDC_LIMIT_MACROS before #including llvm-c/DataTypes.h"
  35 #endif
  36
  37 #if !defined(UINT32_C)
  38 # error "The standard header <cstdint> is not C++11 compliant. Must #define "\
  39         "__STDC_CONSTANT_MACROS before #including llvm-c/DataTypes.h"
  40 #endif
  41
  42 /* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
  43 #include <sys/types.h>
  44
  45 #ifdef _AIX
  46 // GCC is strict about defining large constants: they must have LL modifier.
  47 #undef INT64_MAX
  48 #undef INT64_MIN
  49 #endif
  50
  51 #else /* _MSC_VER */
  52 #ifdef __cplusplus
  53 #include <cstddef>
  54 #include <cstdlib>
  55 #else
  56 #include <stddef.h>
  57 #include <stdlib.h>
  58 #endif
  59 #include <sys/types.h>
  60
  61 #if defined(_WIN64)
  62 typedef signed __int64 ssize_t;
  63 #else
  64 typedef signed int ssize_t;
  65 #endif /* _WIN64 */
  66
  67 #endif /* _MSC_VER */
  68
  69 /* Set defaults for constants which we cannot find. */
  70 #if !defined(INT64_MAX)
  71 # define INT64_MAX 9223372036854775807LL
  72 #endif
  73 #if !defined(INT64_MIN)
  74 # define INT64_MIN ((-INT64_MAX)-1)
  75 #endif
  76 #if !defined(UINT64_MAX)
  77 # define UINT64_MAX 0xffffffffffffffffULL
  78 #endif
  79
  80 #endif /* LLVM_C_DATATYPES_H */