xref: /freebsd/contrib/netbsd-tests/lib/libc/gen/t_isnan.c (revision f4b37ed0f8b307b1f3f0f630ca725d68f1dff30d)
1 /* $NetBSD: t_isnan.c,v 1.5 2014/11/04 00:20:19 justin 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 
17 ATF_TC(isnan_basic);
18 ATF_TC_HEAD(isnan_basic, tc)
19 {
20 	atf_tc_set_md_var(tc, "descr", "Verify that isnan(3) works");
21 }
22 
23 ATF_TC_BODY(isnan_basic, tc)
24 {
25 #if defined(__m68k__)
26 	atf_tc_skip("Test not applicable on " MACHINE_ARCH);
27 #endif
28 
29 #ifdef NAN
30 	/* NAN is meant to be a (float)NaN. */
31 	ATF_CHECK(isnan(NAN) != 0);
32 	ATF_CHECK(isnan((double)NAN) != 0);
33 #else
34 	atf_tc_skip("Test not applicable");
35 #endif
36 }
37 
38 ATF_TC(isinf_basic);
39 ATF_TC_HEAD(isinf_basic, tc)
40 {
41 	atf_tc_set_md_var(tc, "descr", "Verify that isinf(3) works");
42 }
43 
44 ATF_TC_BODY(isinf_basic, tc)
45 {
46 #if defined(__m68k__)
47 	atf_tc_skip("Test not applicable on " MACHINE_ARCH);
48 #endif
49 
50 	/* HUGE_VAL is meant to be an infinity. */
51 	ATF_CHECK(isinf(HUGE_VAL) != 0);
52 
53 	/* HUGE_VALF is the float analog of HUGE_VAL. */
54 	ATF_CHECK(isinf(HUGE_VALF) != 0);
55 
56 	/* HUGE_VALL is the long double analog of HUGE_VAL. */
57 	ATF_CHECK(isinf(HUGE_VALL) != 0);
58 }
59 
60 ATF_TP_ADD_TCS(tp)
61 {
62 	ATF_TP_ADD_TC(tp, isnan_basic);
63 	ATF_TP_ADD_TC(tp, isinf_basic);
64 
65 	return atf_no_error();
66 }
67