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- /* generic.h: Header file to be included by all other files
- Copyright (C) 2002-2004 Sebastian Reichelt
- Copyright (C) 2007 Kevin Kofler
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
- #ifndef GENERIC_H
- #define GENERIC_H
- #ifdef __GNUC__
- #define ATTRIBUTE_PACKED __attribute__((__packed__))
- #define ATTRIBUTE_MAY_ALIAS __attribute__((__may_alias__))
- #else
- #define ATTRIBUTE_PACKED /**/
- #define ATTRIBUTE_MAY_ALIAS /**/
- #endif
- // Attempt to auto-detect I1, I2, I4, SI1, SI2 and SI4 based on <limits.h>.
- // It is a good idea to double-check these definitions on every new system
- // you compile on.
- // Such a check is also performed at run time (or optimized away as dead
- // code).
- #include <limits.h>
- // Make sure that the character types take exactly 1 byte.
- #if UCHAR_MAX != 0xFF
- #error Need 1-byte unsigned char type.
- #endif /* UCHAR_MAX != 0xFF */
- #if SCHAR_MIN != (-0x80) || SCHAR_MAX != 0x7F
- #error Need 1-byte signed char type.
- #endif /* UCHAR_MAX != 0xFF */
- // Unsigned types.
- typedef unsigned char I1;
- #if USHRT_MAX == 0xFFFF
- typedef unsigned short I2;
- #elif UINT_MAX == 0xFFFF
- typedef unsigned int I2;
- #elif ULONG_MAX == 0xFFFF
- typedef unsigned long I2;
- #else /* no 2-byte unsigned int */
- #error No 2-byte unsigned integer type found.
- #endif /* 2-byte unsigned int */
- #if ULONG_MAX == 0xFFFFFFFF
- typedef unsigned long I4;
- #elif UINT_MAX == 0xFFFFFFFF
- typedef unsigned int I4;
- #elif ULONG_LONG_MAX == 0xFFFFFFFF || ULLONG_MAX == 0xFFFFFFFF
- typedef unsigned long long I4;
- #else /* no 4-byte unsigned int */
- #error No 4-byte unsigned integer type found.
- #endif /* 4-byte unsigned int */
- // Signed types.
- typedef signed char SI1;
- #if SHRT_MIN == (-0x8000) && SHRT_MAX == 0x7FFF
- typedef short SI2;
- #elif INT_MIN == (-0x8000) && INT_MAX == 0x7FFF
- typedef int SI2;
- #elif LONG_MIN == (-0x8000) && LONG_MAX == 0x7FFF
- typedef long SI2;
- #else /* no 2-byte signed int */
- #error No 2-byte signed integer type found.
- #endif /* 2-byte signed int */
- #if LONG_MIN == (-0x80000000) && LONG_MAX == 0x7FFFFFFF
- typedef long SI4;
- #elif INT_MIN == (-0x80000000) && INT_MAX == 0x7FFFFFFF
- typedef int SI4;
- #elif (LONG_LONG_MIN == (-0x80000000) && LONG_LONG_MAX == 0x7FFFFFFF) \
- || (LLONG_MIN == (-0x80000000) && LLONG_MAX == 0x7FFFFFFF)
- typedef long long SI4;
- #else /* no 4-byte signed int */
- #error No 4-byte signed integer type found.
- #endif /* 4-byte signed int */
- // Maximum used specific-size integers.
- #define IMAX I4
- #define SIMAX SI4
- // These should be all right in most cases.
- typedef int BOOLEAN;
- typedef SI4 COUNT;
- typedef COUNT SIZE;
- #endif
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