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33 lines
796 B
C
33 lines
796 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 "dirichlet.h"
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ulong
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dirichlet_chi(const dirichlet_group_t G, const dirichlet_char_t chi, ulong n)
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{
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if (n_gcd(G->q, n) > 1)
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{
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return DIRICHLET_CHI_NULL;
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}
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else
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{
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ulong v;
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dirichlet_char_t x;
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dirichlet_char_init(x, G);
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dirichlet_char_log(x, G, n);
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v = dirichlet_chi_char(G, chi, x);
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dirichlet_char_clear(x);
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return v;
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}
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}
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