1 /*********************************************************************/ 2 // dar - disk archive - a backup/restoration program 3 // Copyright (C) 2002-2052 Denis Corbin 4 // 5 // This program is free software; you can redistribute it and/or 6 // modify it under the terms of the GNU General Public License 7 // as published by the Free Software Foundation; either version 2 8 // of the License, or (at your option) any later version. 9 // 10 // This program is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU General Public License for more details. 14 // 15 // You should have received a copy of the GNU General Public License 16 // along with this program; if not, write to the Free Software 17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 // 19 // to contact the author : http://dar.linux.free.fr/email.html 20 /*********************************************************************/ 21 22 /// \file integers.hpp 23 /// \brief are defined here basic integer types that tend to be portable 24 /// \ingroup Private 25 26 27 #ifndef INTEGERS_HPP 28 #define INTEGERS_HPP 29 30 #include "../my_config.h" 31 #include <string> 32 33 /// \addtogroup Private 34 /// @{ 35 36 #ifndef OS_BITS 37 38 #if HAVE_INTTYPES_H 39 extern "C" 40 { 41 #if HAVE_INTTYPES_H 42 #include <inttypes.h> 43 #endif 44 #if HAVE_LIMITS_H 45 #include <limits.h> 46 #endif 47 } // end extern "C" 48 49 namespace libdar 50 { 51 typedef unsigned char U_8; 52 typedef uint16_t U_16; 53 typedef uint32_t U_32; 54 typedef uint64_t U_64; 55 typedef size_t U_I; 56 // configure will define size_t as "unsigned int" if it not defined by system headers 57 // thus using U_I we are sure we can compare buffer sizes with SSIZE_MAX 58 typedef signed char S_8; 59 typedef int16_t S_16; 60 typedef int32_t S_32; 61 typedef int64_t S_64; 62 typedef signed int S_I; 63 64 } 65 66 #else // HAVE_INTTYPES_H 67 #error "Cannot determine interger types, use --enable-os-bits=... with the 'configure' script according to your system's CPU register size" 68 #endif // HAVE_INTTYPES_H 69 70 #else // OS_BITS is defined 71 #if OS_BITS == 32 72 73 namespace libdar 74 { 75 typedef unsigned char U_8; 76 typedef unsigned short U_16; 77 typedef unsigned long U_32; 78 typedef unsigned long long U_64; 79 typedef size_t U_I; 80 typedef signed char S_8; 81 typedef signed short S_16; 82 typedef signed long S_32; 83 typedef signed long long S_64; 84 typedef signed int S_I; 85 86 } 87 88 #else // OS_BITS != 32 89 #if OS_BITS == 64 90 91 namespace libdar 92 { 93 typedef unsigned char U_8; 94 typedef unsigned short U_16; 95 typedef unsigned int U_32; 96 typedef unsigned long long U_64; 97 typedef size_t U_I; 98 typedef signed char S_8; 99 typedef signed short S_16; 100 typedef signed int S_32; 101 typedef signed long long S_64; 102 typedef signed int S_I; 103 104 } 105 106 #else // OS_BITS != 32 and OS_BITS != 64 107 #error "unknown value given to --enable-os-bits=... check the 'configure' script arguments" 108 // unknown OS_BITS value ! use --enable-os-bits=... option to configure script 109 // 110 // the previous line should not compile, this is the expected behaviour 111 112 #endif // OS_BITS == 64 113 #endif // OS_BITS == 32 114 #endif // OS_BITS not defined 115 116 namespace libdar 117 { 118 119 120 /// checks sign and width of integer types 121 122 /// \note this call may throws an Ehardware exception 123 void integer_check(); 124 125 126 /// returns true if the system is big endian, false else 127 128 /// \note this call may throw an Ehardware() exception if the 129 /// system is not coherent for all integer types 130 bool integers_system_is_big_endian(); 131 132 } 133 134 /// @} 135 136 137 #endif // header file multiple inclusion protection 138