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 #ifdef __cplusplus
  28 #include <cmath>
  29 #else
  30 #include <math.h>
  31 #endif
  32
  33 #include <inttypes.h>
  34 #include <stdint.h>
  35
  36 #ifndef _MSC_VER
  37
  38 #if !defined(UINT32_MAX)
  39 # error "The standard header <cstdint> is not C++11 compliant. Must #define "\
  40         "__STDC_LIMIT_MACROS before #including llvm-c/DataTypes.h"
  41 #endif
  42
  43 #if !defined(UINT32_C)
  44 # error "The standard header <cstdint> is not C++11 compliant. Must #define "\
  45         "__STDC_CONSTANT_MACROS before #including llvm-c/DataTypes.h"
  46 #endif
  47
  48 /* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
  49 #include <sys/types.h>
  50
  51 #ifdef _AIX
  52 // GCC is strict about defining large constants: they must have LL modifier.
  53 #undef INT64_MAX
  54 #undef INT64_MIN
  55 #endif
  56
  57 #else /* _MSC_VER */
  58 #ifdef __cplusplus
  59 #include <cstddef>
  60 #include <cstdlib>
  61 #else
  62 #include <stddef.h>
  63 #include <stdlib.h>
  64 #endif
  65 #include <sys/types.h>
  66
  67 #if defined(_WIN64)
  68 typedef signed __int64 ssize_t;
  69 #else
  70 typedef signed int ssize_t;
  71 #endif /* _WIN64 */
  72
  73 #endif /* _MSC_VER */
  74
  75 /* Set defaults for constants which we cannot find. */
  76 #if !defined(INT64_MAX)
  77 # define INT64_MAX 9223372036854775807LL
  78 #endif
  79 #if !defined(INT64_MIN)
  80 # define INT64_MIN ((-INT64_MAX)-1)
  81 #endif
  82 #if !defined(UINT64_MAX)
  83 # define UINT64_MAX 0xffffffffffffffffULL
  84 #endif
  85
  86 #ifndef HUGE_VALF
  87 #define HUGE_VALF (float)HUGE_VAL
  88 #endif
  89
  90 #endif /* LLVM_C_DATATYPES_H */