1 /** @file 2 Intel x86 architecture (both Ia32 and X64) 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 - 2011, 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. 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 (-9223372036854775807LL - 1LL) // -(2^63 - 1) 51 52 /** Maximum value for an object of type long long int. **/ 53 #define __LLONG_MAX 9223372036854775807LL // 2^63 - 1 54 55 /** Maximum value for an object of type unsigned long long int. **/ 56 #define __ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL // 2^64 - 1 57 58 /** Intel extensions to <limits.h> for UEFI 59 @{ 60 **/ 61 #define __SHORT_BIT 16 ///< Number of bits comprising a short int. 62 #define __WCHAR_BIT 16 ///< Number of bits comprising a wide character. 63 #define __INT_BIT 32 ///< Number of bits comprising an int. 64 #define __LONG_LONG_BIT 64 ///< Number of bits comprising a long long int. 65 /// @} 66 67 #endif /* _MACHINE_LIMITS_H */ 68