1 /*
2 Copyright (C) 2014 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_get_mag(mag_t u,const acb_t z)15 acb_get_mag(mag_t u, const acb_t z)
16 {
17 if (arb_is_zero(acb_imagref(z)))
18 {
19 arb_get_mag(u, acb_realref(z));
20 }
21 else if (arb_is_zero(acb_realref(z)))
22 {
23 arb_get_mag(u, acb_imagref(z));
24 }
25 else
26 {
27 mag_t v;
28 mag_init(v);
29
30 arb_get_mag(u, acb_realref(z));
31 arb_get_mag(v, acb_imagref(z));
32
33 mag_mul(u, u, u);
34 mag_addmul(u, v, v);
35 mag_sqrt(u, u);
36
37 mag_clear(v);
38 }
39 }
40
41