mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
62 lines
1.6 KiB
C
62 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) 2015 Fredrik Johansson
|
|
|
|
******************************************************************************/
|
|
|
|
#include "mag.h"
|
|
|
|
void
|
|
mag_geom_series(mag_t res, const mag_t x, ulong n)
|
|
{
|
|
if (mag_is_zero(x))
|
|
{
|
|
if (n == 0)
|
|
mag_one(res);
|
|
else
|
|
mag_zero(res);
|
|
}
|
|
else if (mag_is_inf(x))
|
|
{
|
|
mag_inf(res);
|
|
}
|
|
else
|
|
{
|
|
mag_t t;
|
|
mag_init(t);
|
|
mag_one(t);
|
|
mag_sub_lower(t, t, x);
|
|
|
|
if (mag_is_zero(t))
|
|
{
|
|
mag_inf(res);
|
|
}
|
|
else
|
|
{
|
|
mag_pow_ui(res, x, n);
|
|
mag_div(res, res, t);
|
|
}
|
|
|
|
mag_clear(t);
|
|
}
|
|
}
|
|
|