1 /* $NetBSD: t_ilogb.c,v 1.11 2024/05/14 15:31:42 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2016 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Maya Rashish.
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
32 #include <sys/cdefs.h>
33 __RCSID("$NetBSD: t_ilogb.c,v 1.11 2024/05/14 15:31:42 riastradh Exp $");
34
35 #include <atf-c.h>
36 #include <fenv.h>
37 #include <limits.h>
38 #include <math.h>
39
40 #ifndef __HAVE_FENV
41
42 # define ATF_CLEAR_EXCEPTS __nothing
43 # define ATF_CHECK_RAISED_INVALID __nothing
44 # define ATF_CHECK_RAISED_NOTHING __nothing
45
46 #else /* __HAVE_FENV */
47
48 # define ATF_CLEAR_EXCEPTS (void)feclearexcept(FE_ALL_EXCEPT);
49
50 # define ATF_CHECK_RAISED_INVALID do { \
51 int r = fetestexcept(FE_ALL_EXCEPT); \
52 ATF_CHECK_MSG((r & FE_INVALID) != 0, \
53 "r & FE_INVALID == 0 (r=%#x, FE_INVALID=%#x)", \
54 r, FE_INVALID); \
55 (void)feclearexcept(FE_ALL_EXCEPT); \
56 } while (/*CONSTCOND*/0)
57
58 # define ATF_CHECK_RAISED_NOTHING do { \
59 int r = fetestexcept(FE_ALL_EXCEPT); \
60 ATF_CHECK_MSG(r == 0, "r=%#x != 0", r); \
61 (void)feclearexcept(FE_ALL_EXCEPT); \
62 } while (/*CONSTCOND*/0)
63
64 #endif /* __HAVE_FENV */
65
66 ATF_TC(ilogb);
ATF_TC_HEAD(ilogb,tc)67 ATF_TC_HEAD(ilogb, tc)
68 {
69 atf_tc_set_md_var(tc, "descr", "Check ilogb family");
70 }
71
ATF_TC_BODY(ilogb,tc)72 ATF_TC_BODY(ilogb, tc)
73 {
74
75 ATF_CLEAR_EXCEPTS;
76
77 ATF_CHECK(ilogbf(0) == FP_ILOGB0);
78 ATF_CHECK_RAISED_INVALID;
79 ATF_CHECK(ilogb(0) == FP_ILOGB0);
80 ATF_CHECK_RAISED_INVALID;
81 ATF_CHECK(ilogbl(0) == FP_ILOGB0);
82 ATF_CHECK_RAISED_INVALID;
83
84 ATF_CHECK(ilogbf(-0.) == FP_ILOGB0);
85 ATF_CHECK_RAISED_INVALID;
86 ATF_CHECK(ilogb(-0.) == FP_ILOGB0);
87 ATF_CHECK_RAISED_INVALID;
88 ATF_CHECK(ilogbl(-0.) == FP_ILOGB0);
89 ATF_CHECK_RAISED_INVALID;
90
91 if (isinf(INFINITY)) {
92 ATF_CHECK(ilogbf(INFINITY) == INT_MAX);
93 ATF_CHECK_RAISED_INVALID;
94 ATF_CHECK(ilogb(INFINITY) == INT_MAX);
95 ATF_CHECK_RAISED_INVALID;
96 ATF_CHECK(ilogbl(INFINITY) == INT_MAX);
97 ATF_CHECK_RAISED_INVALID;
98
99 ATF_CHECK(ilogbf(-INFINITY) == INT_MAX);
100 ATF_CHECK_RAISED_INVALID;
101 ATF_CHECK(ilogb(-INFINITY) == INT_MAX);
102 ATF_CHECK_RAISED_INVALID;
103 ATF_CHECK(ilogbl(-INFINITY) == INT_MAX);
104 ATF_CHECK_RAISED_INVALID;
105 }
106
107 ATF_CHECK(ilogbf(1024) == 10);
108 ATF_CHECK_RAISED_NOTHING;
109 ATF_CHECK(ilogb(1024) == 10);
110 ATF_CHECK_RAISED_NOTHING;
111 ATF_CHECK(ilogbl(1024) == 10);
112 ATF_CHECK_RAISED_NOTHING;
113
114 #ifdef NAN
115 ATF_CHECK(ilogbf(NAN) == FP_ILOGBNAN);
116 ATF_CHECK_RAISED_INVALID;
117 ATF_CHECK(ilogb(NAN) == FP_ILOGBNAN);
118 ATF_CHECK_RAISED_INVALID;
119 ATF_CHECK(ilogbl(NAN) == FP_ILOGBNAN);
120 ATF_CHECK_RAISED_INVALID;
121 #endif
122 }
123
ATF_TP_ADD_TCS(tp)124 ATF_TP_ADD_TCS(tp)
125 {
126
127 ATF_TP_ADD_TC(tp, ilogb);
128
129 return atf_no_error();
130 }
131