t_errhandling.c revision 1.1 
1/*	$NetBSD: t_errhandling.c,v 1.1 2024/09/09 15:08:23 riastradh 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 1.1 2024/09/09 15:08:23 riastradh Exp $");
31
32#include <atf-c.h>
33#include <errno.h>
34#include <fenv.h>
35#include <math.h>
36
37ATF_TC(log);
38ATF_TC_HEAD(log, tc)
39{
40	atf_tc_set_md_var(tc, "descr", "log of invalid");
41}
42ATF_TC_BODY(log, tc)
43{
44	static const struct {
45#ifdef __HAVE_FENV
46		double x;
47		int e;
48#define	C(x, e)		{ x, e }
49#else
50		double x;
51#define	C(x, e)		{ x }
52#endif
53	} cases[] = {
54		C(0, FE_DIVBYZERO),
55		C(-0., FE_DIVBYZERO),
56		C(-1, FE_INVALID),
57		C(-HUGE_VAL, FE_INVALID),
58	};
59	volatile double y;
60#ifdef __HAVE_FENV
61	int except;
62#endif
63	unsigned i;
64
65	for (i = 0; i < __arraycount(cases); i++) {
66		const volatile double x = cases[i].x;
67
68#ifdef __HAVE_FENV
69		feclearexcept(FE_ALL_EXCEPT);
70#endif
71		errno = 0;
72		y = log(x);
73		if (math_errhandling & MATH_ERREXCEPT) {
74#ifdef __HAVE_FENV
75			ATF_CHECK_MSG(((except = fetestexcept(FE_ALL_EXCEPT)) &
76				cases[i].e) != 0,
77			    "expected=0x%x actual=0x%x", cases[i].e, except);
78#else
79			atf_tc_fail_nonfatal("MATH_ERREXCEPT but no fenv.h");
80#endif
81		}
82		if (math_errhandling & MATH_ERRNO)
83			ATF_CHECK_EQ_MSG(errno, EDOM, "errno=%d", errno);
84	}
85
86	__USE(y);
87}
88
89ATF_TP_ADD_TCS(tp)
90{
91
92	ATF_TP_ADD_TC(tp, log);
93
94	return atf_no_error();
95}
96