Mercurial > projects > ldc
annotate lphobos/std/stdint.d @ 883:b52d5de7783f
GC defines and linkage changes.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Thu, 08 Jan 2009 18:20:02 +0100 |
| parents | eef8ac26c66c |
| children |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 /** | |
| 3 * | |
| 4 D constrains integral types to specific sizes. But efficiency | |
| 5 of different sizes varies from machine to machine, | |
| 6 pointer sizes vary, and the maximum integer size varies. | |
| 7 <b>stdint</b> offers a portable way of trading off size | |
| 8 vs efficiency, in a manner compatible with the <tt>stdint.h</tt> | |
| 9 definitions in C. | |
| 10 | |
| 11 The exact aliases are types of exactly the specified number of bits. | |
| 12 The at least aliases are at least the specified number of bits | |
| 13 large, and can be larger. | |
| 14 The fast aliases are the fastest integral type supported by the | |
| 15 processor that is at least as wide as the specified number of bits. | |
| 16 | |
| 17 The aliases are: | |
| 18 | |
| 19 <table border=1 cellspacing=0 cellpadding=5> | |
| 20 <th>Exact Alias | |
| 21 <th>Description | |
| 22 <th>At Least Alias | |
| 23 <th>Description | |
| 24 <th>Fast Alias | |
| 25 <th>Description | |
| 26 <tr> | |
| 27 <td>int8_t | |
| 28 <td>exactly 8 bits signed | |
| 29 <td>int_least8_t | |
| 30 <td>at least 8 bits signed | |
| 31 <td>int_fast8_t | |
| 32 <td>fast 8 bits signed | |
| 33 <tr> | |
| 34 <td>uint8_t | |
| 35 <td>exactly 8 bits unsigned | |
| 36 <td>uint_least8_t | |
| 37 <td>at least 8 bits unsigned | |
| 38 <td>uint_fast8_t | |
| 39 <td>fast 8 bits unsigned | |
| 40 | |
| 41 <tr> | |
| 42 <td>int16_t | |
| 43 <td>exactly 16 bits signed | |
| 44 <td>int_least16_t | |
| 45 <td>at least 16 bits signed | |
| 46 <td>int_fast16_t | |
| 47 <td>fast 16 bits signed | |
| 48 <tr> | |
| 49 <td>uint16_t | |
| 50 <td>exactly 16 bits unsigned | |
| 51 <td>uint_least16_t | |
| 52 <td>at least 16 bits unsigned | |
| 53 <td>uint_fast16_t | |
| 54 <td>fast 16 bits unsigned | |
| 55 | |
| 56 <tr> | |
| 57 <td>int32_t | |
| 58 <td>exactly 32 bits signed | |
| 59 <td>int_least32_t | |
| 60 <td>at least 32 bits signed | |
| 61 <td>int_fast32_t | |
| 62 <td>fast 32 bits signed | |
| 63 <tr> | |
| 64 <td>uint32_t | |
| 65 <td>exactly 32 bits unsigned | |
| 66 <td>uint_least32_t | |
| 67 <td>at least 32 bits unsigned | |
| 68 <td>uint_fast32_t | |
| 69 <td>fast 32 bits unsigned | |
| 70 | |
| 71 <tr> | |
| 72 <td>int64_t | |
| 73 <td>exactly 64 bits signed | |
| 74 <td>int_least64_t | |
| 75 <td>at least 64 bits signed | |
| 76 <td>int_fast64_t | |
| 77 <td>fast 64 bits signed | |
| 78 <tr> | |
| 79 <td>uint64_t | |
| 80 <td>exactly 64 bits unsigned | |
| 81 <td>uint_least64_t | |
| 82 <td>at least 64 bits unsigned | |
| 83 <td>uint_fast64_t | |
| 84 <td>fast 64 bits unsigned | |
| 85 </table> | |
| 86 | |
| 87 The ptr aliases are integral types guaranteed to be large enough | |
| 88 to hold a pointer without losing bits: | |
| 89 | |
| 90 <table border=1 cellspacing=0 cellpadding=5> | |
| 91 <th>Alias | |
| 92 <th>Description | |
| 93 <tr> | |
| 94 <td>intptr_t | |
| 95 <td>signed integral type large enough to hold a pointer | |
| 96 <tr> | |
| 97 <td>uintptr_t | |
| 98 <td>unsigned integral type large enough to hold a pointer | |
| 99 </table> | |
| 100 | |
| 101 The max aliases are the largest integral types: | |
| 102 | |
| 103 <table border=1 cellspacing=0 cellpadding=5> | |
| 104 <th>Alias | |
| 105 <th>Description | |
| 106 <tr> | |
| 107 <td>intmax_t | |
| 108 <td>the largest signed integral type | |
| 109 <tr> | |
| 110 <td>uintmax_t | |
| 111 <td>the largest unsigned integral type | |
| 112 </table> | |
| 113 | |
| 114 * Authors: Walter Bright, www.digitalmars.com | |
| 115 * License: Public Domain | |
| 116 * Macros: | |
| 117 * WIKI=Phobos/StdStdint | |
| 118 */ | |
| 119 | |
| 120 /* | |
| 121 NOTE: This file has been patched from the original DMD distribution to | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
1
diff
changeset
|
122 work with the LDC compiler. |
| 1 | 123 |
| 124 Modified by Tomas Lindquist Olsen, August 2007 | |
| 125 */ | |
| 126 | |
| 127 module std.stdint; | |
| 128 | |
| 129 /* Exact sizes */ | |
| 130 | |
| 131 alias byte int8_t; | |
| 132 alias ubyte uint8_t; | |
| 133 alias short int16_t; | |
| 134 alias ushort uint16_t; | |
| 135 alias int int32_t; | |
| 136 alias uint uint32_t; | |
| 137 alias long int64_t; | |
| 138 alias ulong uint64_t; | |
| 139 | |
| 140 /* At least sizes */ | |
| 141 | |
| 142 alias byte int_least8_t; | |
| 143 alias ubyte uint_least8_t; | |
| 144 alias short int_least16_t; | |
| 145 alias ushort uint_least16_t; | |
| 146 alias int int_least32_t; | |
| 147 alias uint uint_least32_t; | |
| 148 alias long int_least64_t; | |
| 149 alias ulong uint_least64_t; | |
| 150 | |
| 151 /* Fastest minimum width sizes */ | |
| 152 | |
| 153 alias byte int_fast8_t; | |
| 154 alias ubyte uint_fast8_t; | |
| 155 alias int int_fast16_t; | |
| 156 alias uint uint_fast16_t; | |
| 157 alias int int_fast32_t; | |
| 158 alias uint uint_fast32_t; | |
| 159 alias long int_fast64_t; | |
| 160 alias ulong uint_fast64_t; | |
| 161 | |
| 162 /* Integer pointer holders */ | |
| 163 | |
| 164 version(LLVM64) { | |
| 165 alias long intptr_t; | |
| 166 alias ulong uintptr_t; | |
| 167 } | |
| 168 else { | |
| 169 alias int intptr_t; | |
| 170 alias uint uintptr_t; | |
| 171 } | |
| 172 | |
| 173 /* Greatest width integer types */ | |
| 174 | |
| 175 alias long intmax_t; | |
| 176 alias ulong uintmax_t; | |
| 177 |