cases.h revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <complex>
11
12// test cases
13
14#ifndef CASES_H
15#define CASES_H
16
17#include <complex>
18#include <cassert>
19
20std::complex<double> x[] =
21{
22    std::complex<double>( 1.e-6,  1.e-6),
23    std::complex<double>(-1.e-6,  1.e-6),
24    std::complex<double>(-1.e-6, -1.e-6),
25    std::complex<double>( 1.e-6, -1.e-6),
26
27    std::complex<double>( 1.e+6,  1.e-6),
28    std::complex<double>(-1.e+6,  1.e-6),
29    std::complex<double>(-1.e+6, -1.e-6),
30    std::complex<double>( 1.e+6, -1.e-6),
31
32    std::complex<double>( 1.e-6,  1.e+6),
33    std::complex<double>(-1.e-6,  1.e+6),
34    std::complex<double>(-1.e-6, -1.e+6),
35    std::complex<double>( 1.e-6, -1.e+6),
36
37    std::complex<double>( 1.e+6,  1.e+6),
38    std::complex<double>(-1.e+6,  1.e+6),
39    std::complex<double>(-1.e+6, -1.e+6),
40    std::complex<double>( 1.e+6, -1.e+6),
41
42    std::complex<double>(NAN, NAN),
43    std::complex<double>(-INFINITY, NAN),
44    std::complex<double>(-2, NAN),
45    std::complex<double>(-1, NAN),
46    std::complex<double>(-0.5, NAN),
47    std::complex<double>(-0., NAN),
48    std::complex<double>(+0., NAN),
49    std::complex<double>(0.5, NAN),
50    std::complex<double>(1, NAN),
51    std::complex<double>(2, NAN),
52    std::complex<double>(INFINITY, NAN),
53
54    std::complex<double>(NAN, -INFINITY),
55    std::complex<double>(-INFINITY, -INFINITY),
56    std::complex<double>(-2, -INFINITY),
57    std::complex<double>(-1, -INFINITY),
58    std::complex<double>(-0.5, -INFINITY),
59    std::complex<double>(-0., -INFINITY),
60    std::complex<double>(+0., -INFINITY),
61    std::complex<double>(0.5, -INFINITY),
62    std::complex<double>(1, -INFINITY),
63    std::complex<double>(2, -INFINITY),
64    std::complex<double>(INFINITY, -INFINITY),
65
66    std::complex<double>(NAN, -2),
67    std::complex<double>(-INFINITY, -2),
68    std::complex<double>(-2, -2),
69    std::complex<double>(-1, -2),
70    std::complex<double>(-0.5, -2),
71    std::complex<double>(-0., -2),
72    std::complex<double>(+0., -2),
73    std::complex<double>(0.5, -2),
74    std::complex<double>(1, -2),
75    std::complex<double>(2, -2),
76    std::complex<double>(INFINITY, -2),
77
78    std::complex<double>(NAN, -1),
79    std::complex<double>(-INFINITY, -1),
80    std::complex<double>(-2, -1),
81    std::complex<double>(-1, -1),
82    std::complex<double>(-0.5, -1),
83    std::complex<double>(-0., -1),
84    std::complex<double>(+0., -1),
85    std::complex<double>(0.5, -1),
86    std::complex<double>(1, -1),
87    std::complex<double>(2, -1),
88    std::complex<double>(INFINITY, -1),
89
90    std::complex<double>(NAN, -0.5),
91    std::complex<double>(-INFINITY, -0.5),
92    std::complex<double>(-2, -0.5),
93    std::complex<double>(-1, -0.5),
94    std::complex<double>(-0.5, -0.5),
95    std::complex<double>(-0., -0.5),
96    std::complex<double>(+0., -0.5),
97    std::complex<double>(0.5, -0.5),
98    std::complex<double>(1, -0.5),
99    std::complex<double>(2, -0.5),
100    std::complex<double>(INFINITY, -0.5),
101
102    std::complex<double>(NAN, -0.),
103    std::complex<double>(-INFINITY, -0.),
104    std::complex<double>(-2, -0.),
105    std::complex<double>(-1, -0.),
106    std::complex<double>(-0.5, -0.),
107    std::complex<double>(-0., -0.),
108    std::complex<double>(+0., -0.),
109    std::complex<double>(0.5, -0.),
110    std::complex<double>(1, -0.),
111    std::complex<double>(2, -0.),
112    std::complex<double>(INFINITY, -0.),
113
114    std::complex<double>(NAN, +0.),
115    std::complex<double>(-INFINITY, +0.),
116    std::complex<double>(-2, +0.),
117    std::complex<double>(-1, +0.),
118    std::complex<double>(-0.5, +0.),
119    std::complex<double>(-0., +0.),
120    std::complex<double>(+0., +0.),
121    std::complex<double>(0.5, +0.),
122    std::complex<double>(1, +0.),
123    std::complex<double>(2, +0.),
124    std::complex<double>(INFINITY, +0.),
125
126    std::complex<double>(NAN, 0.5),
127    std::complex<double>(-INFINITY, 0.5),
128    std::complex<double>(-2, 0.5),
129    std::complex<double>(-1, 0.5),
130    std::complex<double>(-0.5, 0.5),
131    std::complex<double>(-0., 0.5),
132    std::complex<double>(+0., 0.5),
133    std::complex<double>(0.5, 0.5),
134    std::complex<double>(1, 0.5),
135    std::complex<double>(2, 0.5),
136    std::complex<double>(INFINITY, 0.5),
137
138    std::complex<double>(NAN, 1),
139    std::complex<double>(-INFINITY, 1),
140    std::complex<double>(-2, 1),
141    std::complex<double>(-1, 1),
142    std::complex<double>(-0.5, 1),
143    std::complex<double>(-0., 1),
144    std::complex<double>(+0., 1),
145    std::complex<double>(0.5, 1),
146    std::complex<double>(1, 1),
147    std::complex<double>(2, 1),
148    std::complex<double>(INFINITY, 1),
149
150    std::complex<double>(NAN, 2),
151    std::complex<double>(-INFINITY, 2),
152    std::complex<double>(-2, 2),
153    std::complex<double>(-1, 2),
154    std::complex<double>(-0.5, 2),
155    std::complex<double>(-0., 2),
156    std::complex<double>(+0., 2),
157    std::complex<double>(0.5, 2),
158    std::complex<double>(1, 2),
159    std::complex<double>(2, 2),
160    std::complex<double>(INFINITY, 2),
161
162    std::complex<double>(NAN, INFINITY),
163    std::complex<double>(-INFINITY, INFINITY),
164    std::complex<double>(-2, INFINITY),
165    std::complex<double>(-1, INFINITY),
166    std::complex<double>(-0.5, INFINITY),
167    std::complex<double>(-0., INFINITY),
168    std::complex<double>(+0., INFINITY),
169    std::complex<double>(0.5, INFINITY),
170    std::complex<double>(1, INFINITY),
171    std::complex<double>(2, INFINITY),
172    std::complex<double>(INFINITY, INFINITY)
173};
174
175enum {zero, non_zero, inf, NaN, non_zero_nan};
176
177template <class T>
178int
179classify(const std::complex<T>& x)
180{
181    if (x == std::complex<T>())
182        return zero;
183    if (std::isinf(x.real()) || std::isinf(x.imag()))
184        return inf;
185    if (std::isnan(x.real()) && std::isnan(x.imag()))
186        return NaN;
187    if (std::isnan(x.real()))
188    {
189        if (x.imag() == T(0))
190            return NaN;
191        return non_zero_nan;
192    }
193    if (std::isnan(x.imag()))
194    {
195        if (x.real() == T(0))
196            return NaN;
197        return non_zero_nan;
198    }
199    return non_zero;
200}
201
202inline
203int
204classify(double x)
205{
206    if (x == 0)
207        return zero;
208    if (std::isinf(x))
209        return inf;
210    if (std::isnan(x))
211        return NaN;
212    return non_zero;
213}
214
215void is_about(float x, float y)
216{
217    assert(std::abs((x-y)/(x+y)) < 1.e-6);
218}
219
220void is_about(double x, double y)
221{
222    assert(std::abs((x-y)/(x+y)) < 1.e-14);
223}
224
225void is_about(long double x, long double y)
226{
227    assert(std::abs((x-y)/(x+y)) < 1.e-14);
228}
229
230#endif  // CASES_H
231