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
78
79
80
81
82
|
/*
* Copyright (c) 2013, Andreas Sandberg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <fputils/fp80.h>
#include "test_helper.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static void
test_cvtf(const char *name, double fin)
{
fp80_t v80 = fp80_cvfd(fin);
double v64 = fp80_cvtd(v80);
test_diag("Conversion '%e' -> fp80 -> double: %e", fin, v64);
printf("# ");
fp80_debug_dump(stdout, v80);
if (v64 == fin ||
(isnan(fin) && isnan(v64) && signbit(fin) == signbit(v64))) {
test_ok(name);
} else {
test_diag("MISMATCH: %e != %e", fin, v64);
test_fail(name);
}
}
static void
test_cvtf_exp(const char *name, double x, int exp)
{
double val = ldexp(x, exp);
test_cvtf(name, val);
}
int
main(int argc, char *argv[])
{
test_init(9);
test_cvtf("+inf", -INFINITY);
test_cvtf("-inf", INFINITY);
test_cvtf("+nan", NAN);
test_cvtf("-nan", -NAN);
test_cvtf("+0", 0);
test_cvtf("PI", M_PI);
test_cvtf_exp("smallest normal", 1.0, -1022);
test_cvtf_exp("denormal1", 0.5, -1022);
test_cvtf_exp("denormal2", 0.25, -1022);
test_exit();
}
|
