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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: genprimes.c,v 1.5 2004/04/01 12:50:09 mdw Exp $ |
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4 | * |
5 | * Generate prime number table |
6 | * |
7 | * (c) 1999 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
14 | * Catacomb is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Catacomb is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with Catacomb; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: genprimes.c,v $ |
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33 | * Revision 1.5 2004/04/01 12:50:09 mdw |
34 | * Add cyclic group abstraction, with test code. Separate off exponentation |
35 | * functions for better static linking. Fix a buttload of bugs on the way. |
36 | * Generally ensure that negative exponents do inversion correctly. Add |
37 | * table of standard prime-field subgroups. (Binary field subgroups are |
38 | * currently unimplemented but easy to add if anyone ever finds a good one.) |
39 | * |
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40 | * Revision 1.4 2001/03/04 13:08:10 mdw |
41 | * Use @DA_LAST@ to determine @MAXPRIME@, now that it exists. |
42 | * |
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43 | * Revision 1.3 2000/08/15 21:41:58 mdw |
44 | * Create a new type for the small primes table elements. |
45 | * |
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46 | * Revision 1.2 1999/12/22 15:48:39 mdw |
47 | * Rename output file. Make output constants unsigned. |
48 | * |
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49 | * Revision 1.1 1999/11/19 13:19:37 mdw |
50 | * Generate small primes table. |
51 | * |
52 | */ |
53 | |
54 | /*----- Header files ------------------------------------------------------*/ |
55 | |
56 | #include <ctype.h> |
57 | #include <errno.h> |
58 | #include <stdio.h> |
59 | #include <stdlib.h> |
60 | #include <string.h> |
61 | |
62 | #include <mLib/darray.h> |
63 | #include <mLib/dstr.h> |
64 | #include <mLib/mdwopt.h> |
65 | #include <mLib/quis.h> |
66 | #include <mLib/report.h> |
67 | |
68 | /*----- Data structures ---------------------------------------------------*/ |
69 | |
70 | DA_DECL(intv, int); |
71 | |
72 | /*----- Main code ---------------------------------------------------------*/ |
73 | |
74 | int main(int argc, char *argv[]) |
75 | { |
76 | int p_max = 0, p_n = 0; |
77 | char *type = "unsigned int"; |
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78 | char *header = "primetab.h"; |
79 | char *source = "primetab.c"; |
80 | char *name = "primetab"; |
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81 | char *sym = 0; |
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82 | intv p = DA_INIT; |
83 | int i; |
84 | |
85 | ego(argv[0]); |
86 | |
87 | for (;;) { |
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88 | int i = getopt(argc, argv, "h:c:i:n:m:t:s:"); |
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89 | if (i < 0) |
90 | break; |
91 | switch (i) { |
92 | case 'h': |
93 | header = optarg; |
94 | break; |
95 | case 'c': |
96 | source = optarg; |
97 | break; |
98 | case 'i': |
99 | name = optarg; |
100 | break; |
101 | case 'n': |
102 | p_max = 0; |
103 | p_n = atoi(optarg); |
104 | break; |
105 | case 'm': |
106 | p_n = 0; |
107 | p_max = atoi(optarg); |
108 | break; |
109 | case 't': |
110 | type = optarg; |
111 | break; |
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112 | case 's': |
113 | sym = optarg; |
114 | break; |
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115 | default: |
116 | pquis(stderr, "Usage: $ [-n nprimes] [-m maxprime] [-t type]\n"); |
117 | exit(EXIT_FAILURE); |
118 | } |
119 | } |
120 | |
121 | if (!p_max && !p_n) |
122 | die(EXIT_FAILURE, "bad arguments to `-n' or `-m'"); |
123 | |
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124 | if (p_n || p_max >= 2) |
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125 | DA_PUSH(&p, 2); |
126 | for (i = 3; (!p_max && !p_n) || |
127 | (p_n && DA_LEN(&p) < p_n) || |
128 | (p_max && i <= p_max); |
129 | i += 2) { |
130 | int j; |
131 | for (j = 0; j < DA_LEN(&p); j++) { |
132 | if (i % DA(&p)[j] == 0) |
133 | goto composite; |
134 | } |
135 | DA_PUSH(&p, i); |
136 | composite:; |
137 | } |
138 | |
139 | { |
140 | FILE *fp = fopen(header, "w"); |
141 | dstr d = DSTR_INIT; |
142 | char *q; |
143 | if (!fp) |
144 | die(EXIT_FAILURE, "couldn't write `%s': %s", header, strerror(errno)); |
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145 | if (!sym) { |
146 | for (q = header; *q; q++) { |
147 | int ch = (unsigned char)*q; |
148 | if (isalnum(ch)) |
149 | ch = toupper(ch); |
150 | else |
151 | ch = '_'; |
152 | DPUTC(&d, ch); |
153 | } |
154 | DPUTZ(&d); |
155 | sym = d.buf; |
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156 | } |
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157 | fprintf(fp, "\ |
158 | /* -*-c-*-\n\ |
159 | *\n\ |
160 | * Table of small prime numbers [generated]\n\ |
161 | */\n\ |
162 | \n\ |
163 | #ifndef %s\n\ |
164 | #define %s\n\ |
165 | \n\ |
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166 | #define NPRIME %luu\n\ |
167 | #define MAXPRIME %uu\n\ |
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168 | \n\ |
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169 | typedef %s smallprime;\n\ |
170 | extern smallprime %s[];\n\ |
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171 | \n\ |
172 | #endif\n\ |
173 | ", |
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174 | sym, sym, |
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175 | (unsigned long)DA_LEN(&p), |
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176 | DA_LAST(&p), |
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177 | type, name); |
178 | dstr_destroy(&d); |
179 | if (fclose(fp) == EOF) { |
180 | remove(header); |
181 | die(EXIT_FAILURE, "error writing `%s': %s", header, strerror(errno)); |
182 | } |
183 | } |
184 | |
185 | { |
186 | FILE *fp = fopen(source, "w"); |
187 | int i; |
188 | if (!fp) |
189 | die(EXIT_FAILURE, "couldn't write `%s': %s", source, strerror(errno)); |
190 | fprintf(fp, "\ |
191 | /* -*-c-*-\n\ |
192 | *\n\ |
193 | * Table of small prime numbers [generated]\n\ |
194 | */\n\ |
195 | \n\ |
196 | #include \"%s\"\n\ |
197 | \n\ |
198 | %s %s[] = {", |
199 | header, type, name); |
200 | for (i = 0; i < DA_LEN(&p); i++) { |
201 | if (i % 8 == 0) |
202 | fputs("\n ", fp); |
203 | fprintf(fp, "%5i, ", DA(&p)[i]); |
204 | } |
205 | fputs("\n\ |
206 | };\n\ |
207 | ", fp); |
208 | if (fclose(fp) == EOF) { |
209 | remove(source); |
210 | die(EXIT_FAILURE, "error writing `%s': %s", source, strerror(errno)); |
211 | } |
212 | } |
213 | |
214 | return (0); |
215 | } |
216 | |
217 | /*----- That's all, folks -------------------------------------------------*/ |