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https://github.com/vale981/arb
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45 lines
1.1 KiB
C
45 lines
1.1 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 "acb_dirichlet.h"
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void
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acb_dirichlet_char_set_expo(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G)
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{
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slong k;
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for (k = 0; k < G->num; k++)
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chi->expo[k] = (chi->x->log[k] * G->PHI[k]) % G->expo;
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}
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void
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acb_dirichlet_char_normalize(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G)
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{
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ulong k, g;
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g = G->expo;
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for (k = 0; k < G->num; k++)
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g = n_gcd(g, chi->expo[k]);
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for (k = 0; k < G->num; k++)
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chi->expo[k] = chi->expo[k] / g;
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nmod_init(&chi->order, G->expo / g);
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}
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void
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acb_dirichlet_char_denormalize(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G)
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{
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ulong k, g;
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g = G->expo / chi->order.n;
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for (k = 0; k < G->num; k++)
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chi->expo[k] *= g;
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}
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