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https://github.com/vale981/arb
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30 lines
801 B
C
30 lines
801 B
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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#include "math.h"
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/* we known the order is prime */
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void
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dlog_precomp_p_init(dlog_precomp_t pre, ulong a, ulong mod, ulong p, ulong num)
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{
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if ( p < DLOG_TABLE_P_LIM )
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{
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dlog_precomp_small_init(pre, a, mod, p, num);
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}
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else
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{
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ulong m;
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m = dlog_bsgs_size(p, num);
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pre->type = DLOG_BSGS;
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pre->cost = dlog_bsgs_init(pre->t.bsgs, a, mod, p, m);
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}
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}
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