mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
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Copyright (C) 2016 Pascal Molin
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "dlog.h"
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int main()
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{
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slong iter;
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flint_rand_t state;
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flint_printf("dlog....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 1000; iter++)
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{
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dlog_table_t table;
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dlog_bsgs_t bsgs;
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dlog_crt_t crt;
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dlog_precomp_t pre1, pre100;
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ulong p, a, k;
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nmod_t modp;
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if (iter < 10)
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p = n_nth_prime(iter + 2);
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else
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p = n_randprime(state, 15, 0);
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nmod_init(&modp, p);
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a = n_primitive_root_prime(p);
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dlog_table_init(table, a, p);
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dlog_bsgs_init(bsgs, a, p, p-1, dlog_bsgs_size(p, 1));
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dlog_crt_init(crt, a, p, p-1, 10);
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dlog_precomp_n_init(pre1, a, p, p-1, 1);
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dlog_precomp_n_init(pre100, a, p, p-1, 100);
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for (k = 1; k < 100 && k < p; k++)
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{
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ulong l0, l1, l2, l3, l4, l5;
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l1 = dlog_table(table, k);
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l2 = dlog_bsgs(bsgs, k);
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l3 = dlog_crt(crt, k);
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l4 = dlog_precomp(pre1, k);
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l5 = dlog_precomp(pre100, k);
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if (iter < 50 && k <= 7)
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l0 = dlog_once(k, a, modp, p-1);
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else
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l0 = l1;
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if (l0 != l1 || l1 != l2 || l1 != l3 || l1 != l4 || l1 != l5)
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{
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flint_printf("\n\nFAIL: log(%wu,%wu) mod %wu\n\n",k,a,p);
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flint_printf("once: %wu\ntable: %wu\nbsgs: %wu\ncrt: %wu\nprecomp1: %wu\nprecomp100: %wu\n\n",
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l0, l1, l2, l3, l4, l5);
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abort();
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}
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}
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dlog_table_clear(table);
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dlog_bsgs_clear(bsgs);
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dlog_crt_clear(crt);
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dlog_precomp_clear(pre1);
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dlog_precomp_clear(pre100);
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}
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flint_randclear(state);
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flint_cleanup();
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flint_printf("PASS\n");
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return EXIT_SUCCESS;
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}
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