libcxx/test/std/numerics/complex.number/complex.transcendentals/asinh.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <complex>
  10
  11 // template<class T>
  12 //   complex<T>
  13 //   asinh(const complex<T>& x);
  14
  15 #include <complex>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19 #include "../cases.h"
  20
  21 template <class T>
  22 void
  23 test(const std::complex<T>& c, std::complex<T> x)
  24 {
  25     assert(asinh(c) == x);
  26 }
  27
  28 template <class T>
  29 void
  30 test()
  31 {
  32     test(std::complex<T>(0, 0), std::complex<T>(0, 0));
  33 }
  34
  35 void test_edges()
  36 {
  37     const double pi = std::atan2(+0., -0.);
  38     const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
  39     for (unsigned i = 0; i < N; ++i)
  40     {
  41         std::complex<double> r = asinh(testcases[i]);
  42         if (testcases[i].real() == 0 && testcases[i].imag() == 0)
  43         {
  44             assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
  45             assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
  46         }
  47         else if (testcases[i].real() == 0 && std::abs(testcases[i].imag()) == 1)
  48         {
  49             assert(r.real() == 0);
  50             assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
  51             if (std::signbit(testcases[i].imag()))
  52                 is_about(r.imag(), -pi/2);
  53             else
  54                 is_about(r.imag(),  pi/2);
  55         }
  56         else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
  57         {
  58             assert(std::isinf(r.real()));
  59             assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
  60             if (std::signbit(testcases[i].imag()))
  61                 is_about(r.imag(), -pi/2);
  62             else
  63                 is_about(r.imag(),  pi/2);
  64         }
  65         else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
  66         {
  67             assert(std::isnan(r.real()));
  68             assert(std::isnan(r.imag()));
  69         }
  70         else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
  71         {
  72             assert(std::isinf(r.real()));
  73             assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
  74             assert(r.imag() == 0);
  75             assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
  76         }
  77         else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
  78         {
  79             assert(std::isinf(r.real()));
  80             assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
  81             if (std::signbit(testcases[i].imag()))
  82                 is_about(r.imag(), -pi/4);
  83             else
  84                 is_about(r.imag(),  pi/4);
  85         }
  86         else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
  87         {
  88             assert(std::isinf(r.real()));
  89             assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
  90             assert(std::isnan(r.imag()));
  91         }
  92         else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
  93         {
  94             assert(std::isnan(r.real()));
  95             assert(r.imag() == 0);
  96             assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
  97         }
  98         else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
  99         {
 100             assert(std::isnan(r.real()));
 101             assert(std::isnan(r.imag()));
 102         }
 103         else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
 104         {
 105             assert(std::isinf(r.real()));
 106             assert(std::isnan(r.imag()));
 107         }
 108         else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
 109         {
 110             assert(std::isnan(r.real()));
 111             assert(std::isnan(r.imag()));
 112         }
 113         else
 114         {
 115             assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
 116             assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
 117         }
 118     }
 119 }
 120
 121 int main(int, char**)
 122 {
 123     test<float>();
 124     test<double>();
 125     test<long double>();
 126     test_edges();
 127
 128   return 0;
 129 }