1 /*
2     Copyright (C) 2017 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 "arb.h"
13 
14 void
arb_sec(arb_t res,const arb_t x,slong prec)15 arb_sec(arb_t res, const arb_t x, slong prec)
16 {
17     arb_cos(res, x, prec + 4);
18     arb_inv(res, res, prec);
19 }
20 
21