1 /*
2 Copyright (C) 2013 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_tan(arb_t y,const arb_t x,slong prec)15 arb_tan(arb_t y, const arb_t x, slong prec)
16 {
17 arb_t u;
18 arb_init(u);
19 arb_sin_cos(y, u, x, prec + 4);
20 arb_div(y, y, u, prec);
21 arb_clear(u);
22 }
23
24