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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*-
* Copyright (C) 2007 David Schultz <das@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*/
/*
* Test for nan(), nanf(), and nanl(). We also test that strtod("nan(...)")
* and sscanf("nan(...)", ...) work identically.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <fenv.h>
#include <float.h>
#include <locale.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "test-utils.h"
static void
testnan(const char *nan_format)
{
char nan_str[128];
char *end;
long double ald[4];
double ad[4];
float af[4];
unsigned i;
snprintf(nan_str, sizeof(nan_str), "nan(%s)", nan_format);
for (i = 0; i < nitems(ad); i++) {
/*
* x86 has an 80-bit long double stored in 96 bits,
* so we need to initialize the memory for the memcmp()
* checks below to work.
*/
bzero(&af[i], sizeof(float));
bzero(&ad[i], sizeof(double));
bzero(&ald[i], sizeof(long double));
}
af[0] = nanf(nan_format);
ATF_REQUIRE(isnan(af[0]));
af[1] = strtof(nan_str, &end);
ATF_REQUIRE(end == nan_str + strlen(nan_str));
ATF_REQUIRE(sscanf(nan_str, "%e", &af[2]) == 1);
ATF_REQUIRE(memcmp(&af[0], &af[1], sizeof(float)) == 0);
ATF_REQUIRE(memcmp(&af[1], &af[2], sizeof(float)) == 0);
if (*nan_format == '\0') {
/* nanf("") == strtof("nan") */
af[3] = strtof("nan", NULL);
ATF_REQUIRE(memcmp(&af[2], &af[3], sizeof(float)) == 0);
}
ad[0] = nan(nan_format);
ATF_REQUIRE(isnan(ad[0]));
ad[1] = strtod(nan_str, &end);
ATF_REQUIRE(end == nan_str + strlen(nan_str));
ATF_REQUIRE(sscanf(nan_str, "%le", &ad[2]) == 1);
ATF_REQUIRE(memcmp(&ad[0], &ad[1], sizeof(double)) == 0);
ATF_REQUIRE(memcmp(&ad[1], &ad[2], sizeof(double)) == 0);
if (*nan_format == '\0') {
/* nan("") == strtod("nan") */
ad[3] = strtod("nan", NULL);
ATF_REQUIRE(memcmp(&ad[2], &ad[3], sizeof(double)) == 0);
}
ald[0] = nanl(nan_format);
ATF_REQUIRE(isnan(ald[0]));
ald[1] = strtold(nan_str, &end);
ATF_REQUIRE(end == nan_str + strlen(nan_str));
ATF_REQUIRE(sscanf(nan_str, "%Le", &ald[2]) == 1);
ATF_REQUIRE(memcmp(&ald[0], &ald[1], sizeof(long double)) == 0);
ATF_REQUIRE(memcmp(&ald[1], &ald[2], sizeof(long double)) == 0);
if (*nan_format == '\0') {
/* nanl("") == strtold("nan") */
ald[3] = strtold("nan", NULL);
ATF_REQUIRE(memcmp(&ald[2], &ald[3], sizeof(long double)) == 0);
}
}
ATF_TC_WITHOUT_HEAD(nan);
ATF_TC_BODY(nan, tc)
{
/* Die if a signalling NaN is returned */
feenableexcept(FE_INVALID);
testnan("0x1234");
testnan("");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, nan);
return (atf_no_error());
}
|
