37     const unsigned N = sizeof(testcases) / sizeof(testcases[0]);  in test_edges()
40         std::complex<double> r = cosh(testcases[i]);  in test_edges()
41         if (testcases[i].real() == 0 && testcases[i].imag() == 0)  in test_edges()
45             assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));  in test_edges()
47         else if (testcases[i].real() == 0 && std::isinf(testcases[i].imag()))  in test_edges()
52         else if (testcases[i].real() == 0 && std::isnan(testcases[i].imag()))  in test_edges()
57         else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))  in test_edges()
62         else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))  in test_edges()
67         else if (std::isinf(testcases[i].real()) && testcases[i].imag() == 0)  in test_edges()
72             assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));  in test_edges()
74         else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))  in test_edges()
77             assert(std::signbit(r.real()) == std::signbit(cos(testcases[i].imag())));  in test_edges()
79 …    assert(std::signbit(r.imag()) == std::signbit(testcases[i].real() * sin(testcases[i].imag())));  in test_edges()
81         else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))  in test_edges()
86         else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))  in test_edges()
92         else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)  in test_edges()
97         else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))  in test_edges()
102         else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))  in test_edges()