1/* $NetBSD: t_infinity.c,v 1.6 2012/09/26 07:24:38 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Martin Husemann <martin@NetBSD.org>.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_infinity.c,v 1.6 2012/09/26 07:24:38 jruoho Exp $");
33
34#include <atf-c.h>
35#include <math.h>
36#include <float.h>
37#include <stdlib.h>
38
39ATF_TC(infinity_float);
40ATF_TC_HEAD(infinity_float, tc)
41{
42	atf_tc_set_md_var(tc, "descr",
43	     "check FPU generated infinite float values");
44}
45
46ATF_TC_BODY(infinity_float, tc)
47{
48	float v;
49
50	v = FLT_MAX;
51	v *= v;
52	ATF_REQUIRE(isinf(v));
53	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
54
55	v = -FLT_MAX;
56	v *= v;
57	ATF_REQUIRE(isinf(v));
58	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
59}
60
61ATF_TC(infinity_double);
62ATF_TC_HEAD(infinity_double, tc)
63{
64	atf_tc_set_md_var(tc, "descr",
65	     "check FPU generated infinite double values");
66}
67
68ATF_TC_BODY(infinity_double, tc)
69{
70	double v;
71
72	v = DBL_MAX;
73	v *= v;
74	ATF_REQUIRE(isinf(v));
75	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
76
77	v = -DBL_MAX;
78	v *= v;
79	ATF_REQUIRE(isinf(v));
80	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
81}
82
83ATF_TC(infinity_long_double);
84ATF_TC_HEAD(infinity_long_double, tc)
85{
86	atf_tc_set_md_var(tc, "descr",
87	     "check FPU generated infinite long double values");
88}
89
90ATF_TC_BODY(infinity_long_double, tc)
91{
92
93#ifndef LDBL_MAX
94	atf_tc_skip("no long double support on this architecture");
95	return;
96#else
97	long double v;
98
99	v = LDBL_MAX;
100	v *= v;
101	ATF_REQUIRE(isinf(v));
102	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
103
104	v = -LDBL_MAX;
105	v *= v;
106	ATF_REQUIRE(isinf(v));
107	ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
108#endif
109}
110
111ATF_TP_ADD_TCS(tp)
112{
113
114	ATF_TP_ADD_TC(tp, infinity_float);
115	ATF_TP_ADD_TC(tp, infinity_double);
116	ATF_TP_ADD_TC(tp, infinity_long_double);
117
118	return atf_no_error();
119}
120