1 /*
2     Copyright (C) 2015 Fredrik Johansson
3 
4     This file is part of Arb.
5 
6     Arb is free software: you can redistribute it and/or modify it under
7     the terms of the GNU Lesser General Public License (LGPL) as published
8     by the Free Software Foundation; either version 2.1 of the License, or
9     (at your option) any later version.  See <http://www.gnu.org/licenses/>.
10 */
11 
12 #include "acb.h"
13 
14 void
acb_atanh(acb_t res,const acb_t z,slong prec)15 acb_atanh(acb_t res, const acb_t z, slong prec)
16 {
17     acb_mul_onei(res, z);
18     acb_atan(res, res, prec);
19     acb_div_onei(res, res);
20 }
21 
22