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https://github.com/vale981/arb
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32 lines
1 KiB
C
32 lines
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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/* char n has exponents = log[k]*PHI[k] / gcd and order expo / gcd
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* so that log = expo[k] */
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void
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acb_dirichlet_char_conrey(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G, const acb_dirichlet_conrey_t x)
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{
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/* assume chi->x already set if x == NULL */
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if (x == NULL)
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x = chi->x;
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else
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acb_dirichlet_conrey_copy(chi->x, G, x);
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chi->q = G->q;
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chi->parity = acb_dirichlet_conrey_parity(G, x);
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chi->conductor = acb_dirichlet_conrey_conductor(G, x);
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acb_dirichlet_char_set_expo(chi, G);
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/* optional: divide by gcd to obtain true order */
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acb_dirichlet_char_normalize(chi, G);
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}
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