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https://github.com/vale981/arb
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6bf072eb59
This will allow us to not loose the julia session on error. See also https://github.com/wbhart/flint2/pull/243
42 lines
1.2 KiB
C
42 lines
1.2 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 "dirichlet.h"
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void
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dirichlet_char_lower(dirichlet_char_t y, const dirichlet_group_t H, const dirichlet_char_t x, const dirichlet_group_t G)
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{
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slong k, l;
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if (G->q % H->q != 0)
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{
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flint_printf("conrey_lower: lower modulus %wu does not divide %wu\n", H->q, G->q);
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flint_abort();
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}
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for (k = 0, l = 0; k < G->num && l < H->num; k++)
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{
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ulong p = G->P[k].p;
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if (p == H->P[l].p)
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{
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ulong pef = n_pow(G->P[k].p, G->P[k].e - H->P[l].e);
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ulong a = x->log[k];
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if (a % pef)
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{
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flint_printf("conrey_lower: conductor does not divide lower modulus %wu", H->q);
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flint_abort();
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}
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y->log[l] = a / pef;
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l++;
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}
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}
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_dirichlet_char_exp(y, H);
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}
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