icuSources/common/unicode/ptypes.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 ******************************************************************************
   5 *
   6 *   Copyright (C) 1997-2012, International Business Machines
   7 *   Corporation and others.  All Rights Reserved.
   8 *
   9 ******************************************************************************
  10 *
  11 *  FILE NAME : ptypes.h
  12 *
  13 *   Date        Name        Description
  14 *   05/13/98    nos         Creation (content moved here from ptypes.h).
  15 *   03/02/99    stephen     Added AS400 support.
  16 *   03/30/99    stephen     Added Linux support.
  17 *   04/13/99    stephen     Reworked for autoconf.
  18 *   09/18/08    srl         Moved basic types back to ptypes.h from platform.h
  19 ******************************************************************************
  20 */
  21
  22 /**
  23  * \file
  24  * \brief C API: Definitions of integer types of various widths
  25  */
  26
  27 #ifndef _PTYPES_H
  28 #define _PTYPES_H
  29
  30 /**
  31  * \def __STDC_LIMIT_MACROS
  32  * According to the Linux stdint.h, the ISO C99 standard specifies that in C++ implementations
  33  * macros like INT32_MIN and UINTPTR_MAX should only be defined if explicitly requested.
  34  * We need to define __STDC_LIMIT_MACROS before including stdint.h in C++ code
  35  * that uses such limit macros.
  36  * @internal
  37  */
  38 #ifndef __STDC_LIMIT_MACROS
  39 #define __STDC_LIMIT_MACROS
  40 #endif
  41
  42 /* NULL, size_t, wchar_t */
  43 #include <stddef.h>
  44
  45 /*
  46  * If all compilers provided all of the C99 headers and types,
  47  * we would just unconditionally #include <stdint.h> here
  48  * and not need any of the stuff after including platform.h.
  49  */
  50
  51 /* Find out if we have stdint.h etc. */
  52 #include "unicode/platform.h"
  53
  54 /*===========================================================================*/
  55 /* Generic data types                                                        */
  56 /*===========================================================================*/
  57
  58 /* If your platform does not have the <stdint.h> header, you may
  59    need to edit the typedefs in the #else section below.
  60    Use #if...#else...#endif with predefined compiler macros if possible. */
  61 #if U_HAVE_STDINT_H
  62
  63 /*
  64  * We mostly need <stdint.h> (which defines the standard integer types) but not <inttypes.h>.
  65  * <inttypes.h> includes <stdint.h> and adds the printf/scanf helpers PRId32, SCNx16 etc.
  66  * which we almost never use, plus stuff like imaxabs() which we never use.
  67  */
  68 #include <stdint.h>
  69
  70 #if U_PLATFORM == U_PF_OS390
  71 /* The features header is needed to get (u)int64_t sometimes. */
  72 #include <features.h>
  73 /* z/OS has <stdint.h>, but some versions are missing uint8_t (APAR PK62248). */
  74 #if !defined(__uint8_t)
  75 #define __uint8_t 1
  76 typedef unsigned char uint8_t;
  77 #endif
  78 #endif /* U_PLATFORM == U_PF_OS390 */
  79
  80 #elif U_HAVE_INTTYPES_H
  81
  82 #   include <inttypes.h>
  83
  84 #else /* neither U_HAVE_STDINT_H nor U_HAVE_INTTYPES_H */
  85
  86 /// \cond
  87 #if ! U_HAVE_INT8_T
  88 typedef signed char int8_t;
  89 #endif
  90
  91 #if ! U_HAVE_UINT8_T
  92 typedef unsigned char uint8_t;
  93 #endif
  94
  95 #if ! U_HAVE_INT16_T
  96 typedef signed short int16_t;
  97 #endif
  98
  99 #if ! U_HAVE_UINT16_T
 100 typedef unsigned short uint16_t;
 101 #endif
 102
 103 #if ! U_HAVE_INT32_T
 104 typedef signed int int32_t;
 105 #endif
 106
 107 #if ! U_HAVE_UINT32_T
 108 typedef unsigned int uint32_t;
 109 #endif
 110
 111 #if ! U_HAVE_INT64_T
 112 #ifdef _MSC_VER
 113     typedef signed __int64 int64_t;
 114 #else
 115     typedef signed long long int64_t;
 116 #endif
 117 #endif
 118
 119 #if ! U_HAVE_UINT64_T
 120 #ifdef _MSC_VER
 121     typedef unsigned __int64 uint64_t;
 122 #else
 123     typedef unsigned long long uint64_t;
 124 #endif
 125 #endif
 126 /// \endcond
 127
 128 #endif /* U_HAVE_STDINT_H / U_HAVE_INTTYPES_H */
 129
 130 #endif /* _PTYPES_H */