1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
/*
Copyright (C) 2021 Fredrik Johansson
This file is part of Arb.
Arb is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "double_interval.h"
di_t
arb_get_di(const arb_t x)
{
di_t res;
if (arf_is_nan(arb_midref(x)))
{
res.a = -D_INF;
res.b = D_INF;
}
else
{
arf_t t;
arf_init(t);
arb_get_lbound_arf(t, x, 53);
res.a = arf_get_d(t, ARF_RND_FLOOR);
arb_get_ubound_arf(t, x, 53);
res.b = arf_get_d(t, ARF_RND_CEIL);
arf_clear(t);
}
return res;
}
|
