| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /** @file
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| 2 | Intel x86 architecture (both Ia32 and X64) specific values for <limits.h>.
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| 3 |
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| 4 | Within this file, the ^ character is used in comments to represent exponentiation.
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| 5 | Thus, 2^7 means "2 to the 7th power", NOT "2 XOR 7".
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| 6 |
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| 7 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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| 8 | This program and the accompanying materials are licensed and made available under
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| 9 | the terms and conditions of the BSD License that accompanies this distribution.
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| 10 | The full text of the license may be found at
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| 11 | http://opensource.org/licenses/bsd-license.
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| 12 |
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| 13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 15 | **/
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| 16 | #ifndef _MACHINE_LIMITS_H
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| 17 | #define _MACHINE_LIMITS_H
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| 18 |
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| 19 | /** Number of bits for smallest object that is not a bit-field (byte). **/
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| 20 | #define __CHAR_BIT 8
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| 21 |
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| 22 | /** Minimum value for an object of type signed char. **/
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| 23 | #define __SCHAR_MIN -128 // -(2^7 - 1)
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| 24 |
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| 25 | /** Maximum value for an object of type signed char. **/
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| 26 | #define __SCHAR_MAX +127 // 2^7 - 1
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| 27 |
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| 28 | /** Maximum value for an object of type unsigned char. **/
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| 29 | #define __UCHAR_MAX 255 // 2^8 - 1
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| 30 |
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| 31 | /** Minimum value for an object of type short int. **/
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| 32 | #define __SHRT_MIN -32768 // -(2^15 - 1)
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| 33 |
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| 34 | /** Maximum value for an object of type short int. **/
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| 35 | #define __SHRT_MAX +32767 // 2^15 - 1
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| 36 |
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| 37 | /** Maximum value for an object of type unsigned short int. **/
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| 38 | #define __USHRT_MAX 65535 // 2^16 - 1
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| 39 |
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| 40 | /** Maximum value for an object of type int. **/
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| 41 | #define __INT_MAX +2147483647 // 2^31 - 1
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| 42 |
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| 43 | /** Minimum value for an object of type int. **/
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| 44 | #define __INT_MIN (-2147483647 - 1) // -(2^31 - 1)
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| 45 |
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| 46 | /** Maximum value for an object of type unsigned int. **/
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| 47 | #define __UINT_MAX 0xffffffff // 2^32 - 1
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| 48 |
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| 49 | /** Minimum value for an object of type long long int. **/
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| 50 | #define __LLONG_MIN (-9223372036854775807LL - 1LL) // -(2^63 - 1)
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| 51 |
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| 52 | /** Maximum value for an object of type long long int. **/
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| 53 | #define __LLONG_MAX 9223372036854775807LL // 2^63 - 1
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| 54 |
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| 55 | /** Maximum value for an object of type unsigned long long int. **/
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| 56 | #define __ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL // 2^64 - 1
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| 57 |
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| 58 | /** Intel extensions to <limits.h> for UEFI
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| 59 | @{
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| 60 | **/
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| 61 | #define __SHORT_BIT 16 ///< Number of bits comprising a short int.
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| 62 | #define __WCHAR_BIT 16 ///< Number of bits comprising a wide character.
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| 63 | #define __INT_BIT 32 ///< Number of bits comprising an int.
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| 64 | #define __LONG_LONG_BIT 64 ///< Number of bits comprising a long long int.
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| 65 | /// @}
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| 66 |
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| 67 | #endif /* _MACHINE_LIMITS_H */
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