1 /* $NetBSD: t_hypot.c,v 1.1 2016/01/24 20:26:47 gson Exp $ */
2
3 /*-
4 * Copyright (c) 2016 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 <atf-c.h>
30 #include <math.h>
31
32 ATF_TC(hypot_integer);
ATF_TC_HEAD(hypot_integer,tc)33 ATF_TC_HEAD(hypot_integer, tc)
34 {
35 atf_tc_set_md_var(tc, "descr", "Test hypot with integer args");
36 }
37
ATF_TC_BODY(hypot_integer,tc)38 ATF_TC_BODY(hypot_integer, tc)
39 {
40 /* volatile so hypotf() won't be evaluated at compile time */
41 volatile double a = 5;
42 volatile double b = 12;
43 ATF_CHECK(hypot(a, b) == 13.0);
44 }
45
46 ATF_TC(hypotf_integer);
ATF_TC_HEAD(hypotf_integer,tc)47 ATF_TC_HEAD(hypotf_integer, tc)
48 {
49 atf_tc_set_md_var(tc, "descr", "Test hypotf with integer args");
50 }
51
ATF_TC_BODY(hypotf_integer,tc)52 ATF_TC_BODY(hypotf_integer, tc)
53 {
54 volatile float a = 5;
55 volatile float b = 12;
56 ATF_CHECK(hypotf(a, b) == 13.0f);
57 }
58
59 ATF_TC(pr50698);
ATF_TC_HEAD(pr50698,tc)60 ATF_TC_HEAD(pr50698, tc)
61 {
62 atf_tc_set_md_var(tc, "descr", "Check for the bug of PR 50698");
63 }
64
ATF_TC_BODY(pr50698,tc)65 ATF_TC_BODY(pr50698, tc)
66 {
67 volatile float a = 1e-18f;
68 float val = hypotf(a, a);
69 ATF_CHECK(!isinf(val));
70 ATF_CHECK(!isnan(val));
71 }
72
73 #if __LDBL_MANT_DIG__ == 64
74 ATF_TC(hypotl_near_underflow);
ATF_TC_HEAD(hypotl_near_underflow,tc)75 ATF_TC_HEAD(hypotl_near_underflow, tc)
76 {
77 atf_tc_set_md_var(tc, "descr", "Test hypotl near underflow");
78 }
79
ATF_TC_BODY(hypotl_near_underflow,tc)80 ATF_TC_BODY(hypotl_near_underflow, tc)
81 {
82 volatile long double a = 0x1.b2933cafa0bb7p-16383L;
83 volatile long double b = 0x1.fffffffffffffp-16351L;
84 volatile long double e = 0x1.fffffffffffffp-16351L;
85 volatile long double ulp = __LDBL_EPSILON__;
86
87 volatile long double val = hypotl(a, b);
88
89 ATF_CHECK(!isinf(val));
90 ATF_CHECK(fabsl(val - e) <= 2 * ulp);
91 }
92 #endif /* __LDBL_MANT_DIG__ == 64 */
93
ATF_TP_ADD_TCS(tp)94 ATF_TP_ADD_TCS(tp)
95 {
96
97 ATF_TP_ADD_TC(tp, hypot_integer);
98 ATF_TP_ADD_TC(tp, hypotf_integer);
99 ATF_TP_ADD_TC(tp, pr50698);
100 #if __LDBL_MANT_DIG__ == 64
101 ATF_TP_ADD_TC(tp, hypotl_near_underflow);
102 #endif /* __LDBL_MANT_DIG__ == 64 */
103
104 return atf_no_error();
105 }
106