1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/* $NetBSD: t_atan.c,v 1.15 2014/03/17 11:08:11 martin Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <atf-c.h>
#include <math.h>
#include "t_libm.h"
static const struct {
double x;
double y;
} values[] = {
#ifndef __vax__
/* vax has no +/- INF */
{ T_LIBM_MINUS_INF, -M_PI / 2 },
{ T_LIBM_PLUS_INF, M_PI / 2 },
#endif
{ -100, -1.560796660108231, },
{ -10, -1.471127674303735, },
{ -1, -M_PI / 4, },
{ -0.1, -0.09966865249116204, },
{ 0.1, 0.09966865249116204, },
{ 1, M_PI / 4, },
{ 10, 1.471127674303735, },
{ 100, 1.560796660108231, },
};
/*
* atan(3)
*/
ATF_LIBM_TEST(atan_nan, "Test atan/atanf(NaN) == NaN")
{
#ifdef T_LIBM_NAN
T_LIBM_CHECK_NAN(0, atan, T_LIBM_NAN);
T_LIBM_CHECK_NAN(0, atanf, T_LIBM_NAN);
#else
atf_tc_skip("no NaN on this machine");
#endif
}
ATF_LIBM_TEST(atan_inrange, "Test atan/atanf(x) for some values")
{
unsigned int i;
for (i = 0; i < __arraycount(values); i++) {
T_LIBM_CHECK(i, atan, values[i].x, values[i].y, 1.0e-15);
T_LIBM_CHECK(i, atanf, values[i].x, values[i].y, 1.0e-7);
}
}
ATF_LIBM_TEST(atan_zero_neg, "Test atan/atanf(-0.0) == -0.0")
{
T_LIBM_CHECK_MINUS_ZERO(0, atan, -0.0);
T_LIBM_CHECK_MINUS_ZERO(0, atanf, -0.0);
}
ATF_LIBM_TEST(atan_zero_pos, "Test atan/atanf(+0.0) == +0.0")
{
T_LIBM_CHECK_PLUS_ZERO(0, atan, +0.0);
T_LIBM_CHECK_PLUS_ZERO(0, atanf, +0.0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, atan_nan);
ATF_TP_ADD_TC(tp, atan_inrange);
ATF_TP_ADD_TC(tp, atan_zero_neg);
ATF_TP_ADD_TC(tp, atan_zero_pos);
return atf_no_error();
}
|
