asinh.pass.cpp revision a90c6dd46005b2b14de3bb889a8d03bb34bd3256 
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// template<class T>
13//   complex<T>
14//   asinh(const complex<T>& x);
15
16#include <complex>
17#include <cassert>
18
19#include "../cases.h"
20
21template <class T>
22void
23test(const std::complex<T>& c, std::complex<T> x)
24{
25    assert(asinh(c) == x);
26}
27
28template <class T>
29void
30test()
31{
32    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
33}
34
35void test_edges()
36{
37    typedef std::complex<double> C;
38    const double pi = std::atan2(+0., -0.);
39    const unsigned N = sizeof(x) / sizeof(x[0]);
40    for (unsigned i = 0; i < N; ++i)
41    {
42        std::complex<double> r = asinh(x[i]);
43        if (x[i].real() == 0 && x[i].imag() == 0)
44        {
45            assert(std::signbit(r.real()) == std::signbit(x[i].real()));
46            assert(std::signbit(r.imag()) == std::signbit(x[i].imag()));
47        }
48        else if (std::isfinite(x[i].real()) && std::isinf(x[i].imag()))
49        {
50            assert(std::isinf(r.real()));
51            assert(std::signbit(x[i].real()) == std::signbit(r.real()));
52            if (std::signbit(x[i].imag()))
53                is_about(r.imag(), -pi/2);
54            else
55                is_about(r.imag(),  pi/2);
56        }
57        else if (std::isfinite(x[i].real()) && std::isnan(x[i].imag()))
58        {
59            assert(std::isnan(r.real()));
60            assert(std::isnan(r.imag()));
61        }
62        else if (std::isinf(x[i].real()) && std::isfinite(x[i].imag()))
63        {
64            assert(std::isinf(r.real()));
65            assert(std::signbit(x[i].real()) == std::signbit(r.real()));
66            assert(r.imag() == 0);
67            assert(std::signbit(x[i].imag()) == std::signbit(r.imag()));
68        }
69        else if (std::isinf(x[i].real()) && std::isinf(x[i].imag()))
70        {
71            assert(std::isinf(r.real()));
72            assert(std::signbit(x[i].real()) == std::signbit(r.real()));
73            if (std::signbit(x[i].imag()))
74                is_about(r.imag(), -pi/4);
75            else
76                is_about(r.imag(),  pi/4);
77        }
78        else if (std::isinf(x[i].real()) && std::isnan(x[i].imag()))
79        {
80            assert(std::isinf(r.real()));
81            assert(std::signbit(x[i].real()) == std::signbit(r.real()));
82            assert(std::isnan(r.imag()));
83        }
84        else if (std::isnan(x[i].real()) && x[i].imag() == 0)
85        {
86            assert(std::isnan(r.real()));
87            assert(r.imag() == 0);
88            assert(std::signbit(x[i].imag()) == std::signbit(r.imag()));
89        }
90        else if (std::isnan(x[i].real()) && std::isfinite(x[i].imag()))
91        {
92            assert(std::isnan(r.real()));
93            assert(std::isnan(r.imag()));
94        }
95        else if (std::isnan(x[i].real()) && std::isinf(x[i].imag()))
96        {
97            assert(std::isinf(r.real()));
98            assert(std::isnan(r.imag()));
99        }
100        else if (std::isnan(x[i].real()) && std::isnan(x[i].imag()))
101        {
102            assert(std::isnan(r.real()));
103            assert(std::isnan(r.imag()));
104        }
105        else
106        {
107            assert(std::signbit(r.real()) == std::signbit(x[i].real()));
108            assert(std::signbit(r.imag()) == std::signbit(x[i].imag()));
109        }
110    }
111}
112
113int main()
114{
115    test<float>();
116    test<double>();
117    test<long double>();
118    test_edges();
119}
120