1 /*
2 Copyright (C) 2012-2015 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 "arb.h"
13
14 void
arb_add_error_arf(arb_t x,const arf_t err)15 arb_add_error_arf(arb_t x, const arf_t err)
16 {
17 mag_t t;
18
19 if (arf_is_zero(err))
20 return;
21
22 if (mag_is_zero(arb_radref(x)))
23 {
24 arf_get_mag(arb_radref(x), err);
25 return;
26 }
27
28 mag_init(t);
29 arf_get_mag(t, err);
30 mag_add(arb_radref(x), arb_radref(x), t);
31 mag_clear(t);
32 }
33
34 void
arb_add_error_2exp_si(arb_t x,slong err)35 arb_add_error_2exp_si(arb_t x, slong err)
36 {
37 fmpz_t t;
38
39 if (mag_is_zero(arb_radref(x)))
40 {
41 mag_one(arb_radref(x));
42 mag_mul_2exp_si(arb_radref(x), arb_radref(x), err);
43 return;
44 }
45
46 fmpz_init(t);
47 fmpz_set_si(t, err);
48 mag_add_2exp_fmpz(arb_radref(x), arb_radref(x), t);
49 fmpz_clear(t);
50 }
51
52 void
arb_add_error_2exp_fmpz(arb_t x,const fmpz_t err)53 arb_add_error_2exp_fmpz(arb_t x, const fmpz_t err)
54 {
55 if (mag_is_zero(arb_radref(x)))
56 {
57 mag_one(arb_radref(x));
58 mag_mul_2exp_fmpz(arb_radref(x), arb_radref(x), err);
59 return;
60 }
61
62 mag_add_2exp_fmpz(arb_radref(x), arb_radref(x), err);
63 }
64
65 void
arb_add_error(arb_t x,const arb_t err)66 arb_add_error(arb_t x, const arb_t err)
67 {
68 mag_t u;
69
70 if (arb_is_zero(err))
71 return;
72
73 if (mag_is_zero(arb_radref(x)))
74 {
75 arb_get_mag(arb_radref(x), err);
76 return;
77 }
78
79 mag_init(u);
80 arb_get_mag(u, err);
81 mag_add(arb_radref(x), arb_radref(x), u);
82 mag_clear(u);
83 }
84
85