t_errhandling.c revision 1.2 
1/*	$NetBSD: t_errhandling.c,v 1.2 2024/09/09 17:03:08 jakllsch Exp $	*/
2
3/*-
4 * Copyright (c) 2024 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__RCSID("$NetBSD: t_errhandling.c,v 1.2 2024/09/09 17:03:08 jakllsch Exp $");
31
32#include <atf-c.h>
33#include <errno.h>
34#define	__TEST_FENV
35#include <fenv.h>
36#include <math.h>
37
38ATF_TC(log);
39ATF_TC_HEAD(log, tc)
40{
41	atf_tc_set_md_var(tc, "descr", "log of invalid");
42}
43ATF_TC_BODY(log, tc)
44{
45	static const struct {
46#ifdef __HAVE_FENV
47		double x;
48		int e;
49#define	C(x, e)		{ x, e }
50#else
51		double x;
52#define	C(x, e)		{ x }
53#endif
54	} cases[] = {
55		C(0, FE_DIVBYZERO),
56		C(-0., FE_DIVBYZERO),
57		C(-1, FE_INVALID),
58		C(-HUGE_VAL, FE_INVALID),
59	};
60	volatile double y;
61#ifdef __HAVE_FENV
62	int except;
63#endif
64	unsigned i;
65
66	for (i = 0; i < __arraycount(cases); i++) {
67		const volatile double x = cases[i].x;
68
69#ifdef __HAVE_FENV
70		feclearexcept(FE_ALL_EXCEPT);
71#endif
72		errno = 0;
73		y = log(x);
74		if (math_errhandling & MATH_ERREXCEPT) {
75#ifdef __HAVE_FENV
76			ATF_CHECK_MSG(((except = fetestexcept(FE_ALL_EXCEPT)) &
77				cases[i].e) != 0,
78			    "expected=0x%x actual=0x%x", cases[i].e, except);
79#else
80			atf_tc_fail_nonfatal("MATH_ERREXCEPT but no fenv.h");
81#endif
82		}
83		if (math_errhandling & MATH_ERRNO)
84			ATF_CHECK_EQ_MSG(errno, EDOM, "errno=%d", errno);
85	}
86
87	__USE(y);
88}
89
90ATF_TP_ADD_TCS(tp)
91{
92
93	ATF_TP_ADD_TC(tp, log);
94
95	return atf_no_error();
96}
97