/src/gnutls/gl/gl_anyhash_primes.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* Table of primes, for use by hash tables. |
2 | | Copyright (C) 2006, 2009-2025 Free Software Foundation, Inc. |
3 | | Written by Bruno Haible <bruno@clisp.org>, 2006. |
4 | | |
5 | | This file is free software: you can redistribute it and/or modify |
6 | | it under the terms of the GNU Lesser General Public License as |
7 | | published by the Free Software Foundation; either version 2.1 of the |
8 | | License, or (at your option) any later version. |
9 | | |
10 | | This file 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 Lesser General Public License for more details. |
14 | | |
15 | | You should have received a copy of the GNU Lesser General Public License |
16 | | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
17 | | |
18 | | /* Array of primes, approximately in steps of factor 1.2. |
19 | | This table was computed by executing the Common Lisp expression |
20 | | (dotimes (i 244) (format t "nextprime(~D)~%" (ceiling (expt 1.2d0 i)))) |
21 | | and feeding the result to PARI/gp. */ |
22 | | static const size_t primes[] = |
23 | | { |
24 | | 11, 13, 17, 19, 23, 29, 37, 41, 47, 59, 67, 83, 97, 127, 139, 167, 199, |
25 | | 239, 293, 347, 419, 499, 593, 709, 853, 1021, 1229, 1471, 1777, 2129, 2543, |
26 | | 3049, 3659, 4391, 5273, 6323, 7589, 9103, 10937, 13109, 15727, 18899, |
27 | | 22651, 27179, 32609, 39133, 46957, 56359, 67619, 81157, 97369, 116849, |
28 | | 140221, 168253, 201907, 242309, 290761, 348889, 418667, 502409, 602887, |
29 | | 723467, 868151, 1041779, 1250141, 1500181, 1800191, 2160233, 2592277, |
30 | | 3110741, 3732887, 4479463, 5375371, 6450413, 7740517, 9288589, 11146307, |
31 | | 13375573, 16050689, 19260817, 23112977, 27735583, 33282701, 39939233, |
32 | | 47927081, 57512503, 69014987, 82818011, 99381577, 119257891, 143109469, |
33 | | 171731387, 206077643, 247293161, 296751781, 356102141, 427322587, |
34 | | 512787097, 615344489, 738413383, 886096061, 1063315271, 1275978331, |
35 | | 1531174013, 1837408799, 2204890543UL, 2645868653UL, 3175042391UL, |
36 | | 3810050851UL, |
37 | | #if SIZE_MAX > 4294967295UL |
38 | | 4572061027UL, 5486473229UL, 6583767889UL, 7900521449UL, 9480625733UL, |
39 | | 11376750877UL, 13652101063UL, 16382521261UL, 19659025513UL, 23590830631UL, |
40 | | 28308996763UL, 33970796089UL, 40764955463UL, 48917946377UL, 58701535657UL, |
41 | | 70441842749UL, 84530211301UL, 101436253561UL, 121723504277UL, |
42 | | 146068205131UL, 175281846149UL, 210338215379UL, 252405858521UL, |
43 | | 302887030151UL, 363464436191UL, 436157323417UL, 523388788231UL, |
44 | | 628066545713UL, 753679854847UL, 904415825857UL, 1085298991109UL, |
45 | | 1302358789181UL, 1562830547009UL, 1875396656429UL, 2250475987709UL, |
46 | | 2700571185239UL, 3240685422287UL, 3888822506759UL, 4666587008147UL, |
47 | | 5599904409713UL, 6719885291641UL, 8063862349969UL, 9676634819959UL, |
48 | | 11611961783951UL, 13934354140769UL, 16721224968907UL, 20065469962669UL, |
49 | | 24078563955191UL, 28894276746229UL, 34673132095507UL, 41607758514593UL, |
50 | | 49929310217531UL, 59915172260971UL, 71898206713183UL, 86277848055823UL, |
51 | | 103533417666967UL, 124240101200359UL, 149088121440451UL, 178905745728529UL, |
52 | | 214686894874223UL, 257624273849081UL, 309149128618903UL, 370978954342639UL, |
53 | | 445174745211143UL, 534209694253381UL, 641051633104063UL, 769261959724877UL, |
54 | | 923114351670013UL, 1107737222003791UL, 1329284666404567UL, |
55 | | 1595141599685509UL, 1914169919622551UL, 2297003903547091UL, |
56 | | 2756404684256459UL, 3307685621107757UL, 3969222745329323UL, |
57 | | 4763067294395177UL, 5715680753274209UL, 6858816903929113UL, |
58 | | 8230580284714831UL, 9876696341657791UL, 11852035609989371UL, |
59 | | 14222442731987227UL, 17066931278384657UL, 20480317534061597UL, |
60 | | 24576381040873903UL, 29491657249048679UL, 35389988698858471UL, |
61 | | 42467986438630267UL, 50961583726356109UL, 61153900471627387UL, |
62 | | 73384680565952851UL, 88061616679143347UL, 105673940014972061UL, |
63 | | 126808728017966413UL, 152170473621559703UL, 182604568345871671UL, |
64 | | 219125482015045997UL, 262950578418055169UL, 315540694101666193UL, |
65 | | 378648832921999397UL, 454378599506399233UL, 545254319407679131UL, |
66 | | 654305183289214771UL, 785166219947057701UL, 942199463936469157UL, |
67 | | 1130639356723763129UL, 1356767228068515623UL, 1628120673682218619UL, |
68 | | 1953744808418662409UL, 2344493770102394881UL, 2813392524122873857UL, |
69 | | 3376071028947448339UL, 4051285234736937517UL, 4861542281684325481UL, |
70 | | 5833850738021191727UL, 7000620885625427969UL, 8400745062750513217UL, |
71 | | 10080894075300616261UL, 12097072890360739951UL, 14516487468432885797UL, |
72 | | 17419784962119465179UL, |
73 | | #endif |
74 | | SIZE_MAX /* sentinel, to ensure the search terminates */ |
75 | | }; |
76 | | |
77 | | /* Returns a suitable prime >= ESTIMATE. */ |
78 | | static size_t |
79 | | next_prime (size_t estimate) |
80 | 0 | { |
81 | 0 | size_t i; |
82 | |
|
83 | 0 | for (i = 0; i < sizeof (primes) / sizeof (primes[0]); i++) |
84 | 0 | if (primes[i] >= estimate) |
85 | 0 | return primes[i]; |
86 | 0 | return SIZE_MAX; /* not a prime, but better than nothing */ |
87 | 0 | } |