arb/acb_dirichlet/char_normalize.c
2016-09-06 14:33:16 +02:00

51 lines
1.6 KiB
C

/*=============================================================================
This file is part of ARB.
ARB is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
ARB is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ARB; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2016 Pascal Molin
******************************************************************************/
#include "acb_dirichlet.h"
void
acb_dirichlet_char_normalize(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G)
{
ulong k, g;
g = G->expo;
for (k = 0; k < G->num; k++)
g = n_gcd(g, chi->expo[k]);
for (k = 0; k < G->num; k++)
chi->expo[k] = chi->expo[k] / g;
chi->order = G->expo / g;
}
void
acb_dirichlet_char_denormalize(acb_dirichlet_char_t chi, const acb_dirichlet_group_t G)
{
ulong k, g;
g = G->expo / chi->order;
for (k = 0; k < G->num; k++)
chi->expo[k] *= g;
}