Standard Libraries for EDK II.

[mirror_edk2.git] / StdLib / Include / x86 / limits.h

diff --git a/StdLib/Include/x86/limits.h b/StdLib/Include/x86/limits.h
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+/** @file\r
+  Machine specific values for <limits.h>.\r
+\r
+  Within this file, the ^ character is used in comments to represent exponentiation.\r
+  Thus, 2^7 means "2 to the 7th power", NOT "2 XOR 7".\r
+\r
+  Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r
+  This program and the accompanying materials are licensed and made available under\r
+  the terms and conditions of the BSD License that accompanies this distribution.\r
+  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php.\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+**/\r
+#ifndef _MACHINE_LIMITS_H\r
+#define _MACHINE_LIMITS_H\r
+\r
+/** Number of bits for smallest object that is not a bit-field (byte). **/\r
+#define __CHAR_BIT    8\r
+\r
+/** minimum value for an object of type signed char **/\r
+#define __SCHAR_MIN   -128 // -(2^7 - 1)\r
+\r
+/** maximum value for an object of type signed char **/\r
+#define __SCHAR_MAX   +127 // 2^7 - 1\r
+\r
+/** maximum value for an object of type unsigned char **/\r
+#define __UCHAR_MAX   255  // 2^8 - 1\r
+\r
+/** minimum value for an object of type short int **/\r
+#define __SHRT_MIN    -32768 // -(2^15 - 1)\r
+\r
+/** maximum value for an object of type short int **/\r
+#define __SHRT_MAX    +32767 // 2^15 - 1\r
+\r
+/** maximum value for an object of type unsigned short int **/\r
+#define __USHRT_MAX   65535 // 2^16 - 1\r
+\r
+/** maximum value for an object of type int **/\r
+#define __INT_MAX     +2147483647 // 2^31 - 1\r
+\r
+/** minimum value for an object of type int **/\r
+#define __INT_MIN     (-2147483647 - 1) // -(2^31 - 1)\r
+\r
+/** maximum value for an object of type unsigned int **/\r
+#define __UINT_MAX    0xffffffff // 2^32 - 1\r
+\r
+/** minimum value for an object of type long int **/\r
+#define __LONG_MIN    (-2147483647L - 1L) // -(2^31 - 1)\r
+\r
+/** maximum value for an object of type long int **/\r
+#define __LONG_MAX    +2147483647L // 2^31 - 1\r
+\r
+/** maximum value for an object of type unsigned long int **/\r
+#define __ULONG_MAX   0xffffffff // 2^32 - 1\r
+\r
+/** minimum value for an object of type long long int **/\r
+//#define __LLONG_MIN   -9223372036854775808LL // -(2^63 - 1)\r
+//#define __LLONG_MIN   ((-9223372036854775807LL)-1) // -(2^63 - 1)\r
+#define __LLONG_MIN   (-9223372036854775807LL - 1LL) // -(2^63 - 1)\r
+\r
+/** maximum value for an object of type long long int **/\r
+#define __LLONG_MAX   9223372036854775807LL // 2^63 - 1\r
+\r
+/** maximum value for an object of type unsigned long long int **/\r
+//#define __ULLONG_MAX  18446744073709551615ULL // 2^64 - 1\r
+#define __ULLONG_MAX  0xFFFFFFFFFFFFFFFFULL // 2^64 - 1\r
+\r
+/* Intel extensions to <limits.h> for UEFI */\r
+#define __SHORT_BIT     16\r
+#define __WCHAR_BIT     16\r
+#define __INT_BIT       32\r
+#define __LONG_BIT      32    /* Compiler dependent */\r
+#define __LONG_LONG_BIT 64\r
+\r
+#endif    /* _MACHINE_LIMITS_H */\r