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18756bee | 1 | .\" nroff |
c4ccbbf9 MW |
2 | .\" |
3 | .\" Manual for universal hashing table generator | |
4 | .\" | |
5 | .\" (c) 2003, 2005, 2007, 2009, 2019, 2024 Straylight/Edgeware | |
6 | .\" | |
7 | . | |
8 | .\"----- Licensing notice --------------------------------------------------- | |
9 | .\" | |
10 | .\" This file is part of the mLib utilities library. | |
11 | .\" | |
12 | .\" mLib is free software: you can redistribute it and/or modify it under | |
13 | .\" the terms of the GNU Library General Public License as published by | |
14 | .\" the Free Software Foundation; either version 2 of the License, or (at | |
15 | .\" your option) any later version. | |
16 | .\" | |
17 | .\" mLib is distributed in the hope that it will be useful, but WITHOUT | |
18 | .\" ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | .\" FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public | |
20 | .\" License for more details. | |
21 | .\" | |
22 | .\" You should have received a copy of the GNU Library General Public | |
23 | .\" License along with mLib. If not, write to the Free Software | |
24 | .\" Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
25 | .\" USA. | |
26 | . | |
27 | .\"-------------------------------------------------------------------------- | |
28 | .so ../defs.man \" @@@PRE@@@ | |
29 | . | |
30 | .\"-------------------------------------------------------------------------- | |
18756bee | 31 | .TH unihash-mkstatic 1 "14 December 2003" "Straylight/Edgeware" "mLib utilities library" |
c4ccbbf9 MW |
32 | . |
33 | .\"-------------------------------------------------------------------------- | |
18756bee | 34 | .SH NAME |
35 | unihash-mkstatic \- construct tables for universal hashing | |
c4ccbbf9 MW |
36 | . |
37 | .\"-------------------------------------------------------------------------- | |
18756bee | 38 | .SH SYNOPSIS |
c4ccbbf9 | 39 | . |
18756bee | 40 | .B unihash-mkstatic |
3e7267bf | 41 | .RB [ \-Cc ] |
18756bee | 42 | .RB [ \-s |
43 | .IR symbol ] | |
44 | .RB [ \-i | |
45 | .IR header ] | |
46 | .RB [ \-g | |
47 | .IR macro ] | |
48 | .br | |
49 | \c | |
50 | .RB [ \-k | |
51 | .IR key ] | |
52 | .RB [ \-o | |
53 | .IR filename ] | |
c4ccbbf9 MW |
54 | . |
55 | .\"-------------------------------------------------------------------------- | |
18756bee | 56 | .SH DESCRIPTION |
c4ccbbf9 | 57 | . |
18756bee | 58 | The |
59 | .B unihash-mkstatic | |
60 | program constructs tables for efficient universal hashing (see | |
61 | .BR unihash (3)). | |
62 | It will produce the table as either an array defined in a C source file | |
63 | or as an initializer macro defined in a C header file. | |
c4ccbbf9 | 64 | . |
18756bee | 65 | .SS "Options" |
66 | The program accepts no non-option arguments. The options are as | |
67 | follows. | |
68 | .TP | |
69 | .B "\-h, \-\-help" | |
70 | Print a help message to standard output and exit successfully. | |
71 | .TP | |
72 | .B "\-v, \-\-version" | |
73 | Print the program's version number to standard output and exit | |
74 | successfully. | |
75 | .TP | |
76 | .B "\-u, \-\-usage" | |
77 | Print a one-line usage summary to standard output and exit successfully. | |
78 | .TP | |
3e7267bf MW |
79 | .B "\-C, \-\-const" |
80 | When producing C source (the | |
81 | .B \-c | |
82 | option), rather than a header, define the table to be | |
83 | .BR const . | |
84 | .TP | |
18756bee | 85 | .B "\-c, \-\-c-source" |
86 | Produce a C source file which exports a symbol naming the array, instead | |
87 | of a C header file. | |
88 | .TP | |
89 | .BI "\-s, \-\-symbol=" symbol | |
90 | Name the table | |
91 | .IR symbol . | |
92 | This is the name of the macro defined by a header file, or the array | |
93 | exported by a C source. The default macro name is | |
94 | .BR UHI_INIT ; | |
95 | the default array name is | |
96 | .BR uhi . | |
97 | .TP | |
98 | .BI "\-i, \-\-include=" header | |
c4ccbbf9 | 99 | .RS |
d4efbcd9 | 100 | Request that generated C source include the named |
18756bee | 101 | .I header |
102 | file. Inserts a | |
103 | line of the form | |
18756bee | 104 | .IP |
c4ccbbf9 MW |
105 | .BI "#include """ header """" |
106 | .PP | |
18756bee | 107 | at the top of the generated C source. The default is not to include |
108 | .BR <mLib/unihash.h> , | |
109 | which is necessary to declare the | |
110 | .B unihash_info | |
111 | type. This option does nothing without the | |
112 | .B \-c | |
113 | option. | |
c4ccbbf9 | 114 | .RE |
18756bee | 115 | .TP |
116 | .BI "\-g, \-\-guard=" macro | |
c4ccbbf9 | 117 | .RS |
18756bee | 118 | Use the named |
119 | .I macro | |
120 | as a guard against multiple inclusion of the generated header file. | |
121 | Inserts a pair of lines of the form | |
18756bee | 122 | .IP |
18756bee | 123 | .nf |
c4ccbbf9 MW |
124 | .BI "#ifndef " macro |
125 | .BI "#define " macro | |
18756bee | 126 | .fi |
c4ccbbf9 MW |
127 | .PP |
128 | at the top of the generated header, and a line | |
18756bee | 129 | .IP |
c4ccbbf9 MW |
130 | .BI "#endif" |
131 | .PP | |
18756bee | 132 | at the end. The default guard macro name is built from the output file |
133 | name specified with | |
134 | .B \-o | |
135 | by uppercasing all alphabetic characters in the name and replacing | |
d4efbcd9 | 136 | nonalphanumeric characters by underscores |
18756bee | 137 | .RB ` _ '. |
138 | This option does nothing with the | |
139 | .B \-c | |
140 | option. | |
c4ccbbf9 | 141 | .RE |
18756bee | 142 | .TP |
143 | .BI "\-k, \-\-key=" key | |
144 | Specifies the hashing key as an integer. Note that if you want to | |
145 | specify the key in hexadecimal, you must prefix it with | |
146 | .BR 0x . | |
147 | The default key is | |
148 | .BR 0xe07e5bd1 , | |
149 | which is, as far as the author knows, as good as any other fixed value. | |
c4ccbbf9 MW |
150 | . |
151 | .\"-------------------------------------------------------------------------- | |
18756bee | 152 | .SH "SEE ALSO" |
c4ccbbf9 | 153 | . |
18756bee | 154 | .BR crc-mktab (1), |
155 | .BR unihash (3). | |
c4ccbbf9 MW |
156 | . |
157 | .\"-------------------------------------------------------------------------- | |
18756bee | 158 | .SH "AUTHOR" |
c4ccbbf9 | 159 | . |
9b5ac6ff | 160 | Mark Wooding, <mdw@distorted.org.uk> |
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161 | . |
162 | .\"----- That's all, folks -------------------------------------------------- |