mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
48 lines
1.5 KiB
C
48 lines
1.5 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) 2013 Fredrik Johansson
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#include "gamma.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
gamma_taylor_bound_ratio(fmpr_t r, long n)
|
||
|
|
{
|
||
|
|
fmprb_t t;
|
||
|
|
fmpq_t q;
|
||
|
|
|
||
|
|
fmprb_init(t);
|
||
|
|
fmpq_init(q);
|
||
|
|
fmpq_set_si(q, -5, 6);
|
||
|
|
|
||
|
|
fmprb_set_ui(t, n);
|
||
|
|
fmprb_pow_fmpq(t, t, q, FMPRB_RAD_PREC);
|
||
|
|
fmprb_mul_ui(t, t, 3, FMPRB_RAD_PREC);
|
||
|
|
|
||
|
|
fmpr_add(r, fmprb_midref(t), fmprb_radref(t), FMPRB_RAD_PREC, FMPR_RND_UP);
|
||
|
|
|
||
|
|
fmprb_clear(t);
|
||
|
|
fmpq_clear(q);
|
||
|
|
}
|
||
|
|
|