StdLib/Include/x86/limits.h

   1 /** @file
   2   Machine specific values for <limits.h>.
   3
   4   Within this file, the ^ character is used in comments to represent exponentiation.
   5   Thus, 2^7 means "2 to the 7th power", NOT "2 XOR 7".
   6
   7   Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
   8   This program and the accompanying materials are licensed and made available under
   9   the terms and conditions of the BSD License that accompanies this distribution.
  10   The full text of the license may be found at
  11   http://opensource.org/licenses/bsd-license.php.
  12
  13   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  14   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15 **/
  16 #ifndef _MACHINE_LIMITS_H
  17 #define _MACHINE_LIMITS_H
  18
  19 /** Number of bits for smallest object that is not a bit-field (byte). **/
  20 #define __CHAR_BIT    8
  21
  22 /** minimum value for an object of type signed char **/
  23 #define __SCHAR_MIN   -128 // -(2^7 - 1)
  24
  25 /** maximum value for an object of type signed char **/
  26 #define __SCHAR_MAX   +127 // 2^7 - 1
  27
  28 /** maximum value for an object of type unsigned char **/
  29 #define __UCHAR_MAX   255  // 2^8 - 1
  30
  31 /** minimum value for an object of type short int **/
  32 #define __SHRT_MIN    -32768 // -(2^15 - 1)
  33
  34 /** maximum value for an object of type short int **/
  35 #define __SHRT_MAX    +32767 // 2^15 - 1
  36
  37 /** maximum value for an object of type unsigned short int **/
  38 #define __USHRT_MAX   65535 // 2^16 - 1
  39
  40 /** maximum value for an object of type int **/
  41 #define __INT_MAX     +2147483647 // 2^31 - 1
  42
  43 /** minimum value for an object of type int **/
  44 #define __INT_MIN     (-2147483647 - 1) // -(2^31 - 1)
  45
  46 /** maximum value for an object of type unsigned int **/
  47 #define __UINT_MAX    0xffffffff // 2^32 - 1
  48
  49 /** minimum value for an object of type long long int **/
  50 //#define __LLONG_MIN   -9223372036854775808LL // -(2^63 - 1)
  51 //#define __LLONG_MIN   ((-9223372036854775807LL)-1) // -(2^63 - 1)
  52 #define __LLONG_MIN   (-9223372036854775807LL - 1LL) // -(2^63 - 1)
  53
  54 /** maximum value for an object of type long long int **/
  55 #define __LLONG_MAX   9223372036854775807LL // 2^63 - 1
  56
  57 /** maximum value for an object of type unsigned long long int **/
  58 //#define __ULLONG_MAX  18446744073709551615ULL // 2^64 - 1
  59 #define __ULLONG_MAX  0xFFFFFFFFFFFFFFFFULL // 2^64 - 1
  60
  61 /* Intel extensions to <limits.h> for UEFI */
  62 #define __SHORT_BIT     16
  63 #define __WCHAR_BIT     16
  64 #define __INT_BIT       32
  65 #define __LONG_LONG_BIT 64
  66
  67 #endif    /* _MACHINE_LIMITS_H */