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[svn r5] Initial commit. Most things are very rough.
author lindquist
date Sat, 01 Sep 2007 21:43:27 +0200
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0:a9e71648e74d 1:c53b6e3fe49a
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
122 work with the LLVMDC compiler.
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