blob: 6c937459cab84aca9b6d3771e22181b17ba731f4 (
plain)
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* Test of sqrtl() function.
Copyright (C) 2010-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include <math.h>
#include "signature.h"
SIGNATURE_CHECK (sqrtl, long double, (long double));
#include <float.h>
#include "fpucw.h"
#include "macros.h"
#define DOUBLE long double
#define L_(literal) literal##L
#define MANT_DIG DBL_MANT_DIG
#define SQRT sqrtl
#define RANDOM randoml
#include "test-sqrt.h"
static long double
my_ldexpl (long double x, int d)
{
for (; d > 0; d--)
x *= 2.0L;
for (; d < 0; d++)
x *= 0.5L;
return x;
}
int
main ()
{
DECL_LONG_DOUBLE_ROUNDING
BEGIN_LONG_DOUBLE_ROUNDING ();
/* A particular value. */
x = 0.6L;
y = sqrtl (x);
ASSERT (y >= 0.7745966692L && y <= 0.7745966693L);
/* Another particular value. */
{
long double z;
long double err;
x = 8.1974099812331540680810141969554806865L;
y = sqrtl (x);
z = y * y - x;
err = my_ldexpl (z, LDBL_MANT_DIG);
if (err < 0)
err = - err;
ASSERT (err <= 100.0L);
}
test_function ();
return 0;
}
|
