t_isnan.c revision 1.6 
1/* $NetBSD: t_isnan.c,v 1.6 2025/04/07 01:54:22 riastradh Exp $ */
2
3/*
4 * This file is in the Public Domain.
5 *
6 * The nan test is blatently copied by Simon Burge from the infinity
7 * test by Ben Harris.
8 */
9
10#include <sys/param.h>
11
12#include <atf-c.h>
13
14#include <math.h>
15#include <string.h>
16
17ATF_TC(isnan_basic);
18ATF_TC_HEAD(isnan_basic, tc)
19{
20	atf_tc_set_md_var(tc, "descr", "Verify that isnan(3) works");
21}
22
23ATF_TC_BODY(isnan_basic, tc)
24{
25
26#ifdef NAN
27	/* NAN is meant to be a (float)NaN. */
28	ATF_CHECK(isnan(NAN) != 0);
29	ATF_CHECK(isnan((double)NAN) != 0);
30#else
31	atf_tc_skip("No NaN on this architecture");
32#endif
33}
34
35ATF_TC(isinf_basic);
36ATF_TC_HEAD(isinf_basic, tc)
37{
38	atf_tc_set_md_var(tc, "descr", "Verify that isinf(3) works");
39}
40
41ATF_TC_BODY(isinf_basic, tc)
42{
43#ifdef __vax__
44	atf_tc_skip("No infinity on this architecture");
45#endif
46
47	/* HUGE_VAL is meant to be an infinity. */
48	ATF_CHECK(isinf(HUGE_VAL) != 0);
49
50	/* HUGE_VALF is the float analog of HUGE_VAL. */
51	ATF_CHECK(isinf(HUGE_VALF) != 0);
52
53	/* HUGE_VALL is the long double analog of HUGE_VAL. */
54	ATF_CHECK(isinf(HUGE_VALL) != 0);
55}
56
57ATF_TP_ADD_TCS(tp)
58{
59	ATF_TP_ADD_TC(tp, isnan_basic);
60	ATF_TP_ADD_TC(tp, isinf_basic);
61
62	return atf_no_error();
63}
64