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)15arb_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