38     const unsigned N = sizeof(testcases) / sizeof(testcases[0]);  in test_edges()
41         std::complex<double> r = acos(testcases[i]);  in test_edges()
42         if (testcases[i].real() == 0 && testcases[i].imag() == 0)  in test_edges()
46             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
48         else if (testcases[i].real() == 0 && std::isnan(testcases[i].imag()))  in test_edges()
53         else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))  in test_edges()
57             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
59 …else if (std::isfinite(testcases[i].real()) && testcases[i].real() != 0 && std::isnan(testcases[i]…  in test_edges()
64 …else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].…  in test_edges()
68             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
70 …else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].…  in test_edges()
75             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
77 …else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isinf(testcases[i].ima…  in test_edges()
81             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
83 …else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isinf(testcases[i].ima…  in test_edges()
87             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
89         else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))  in test_edges()
94         else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))  in test_edges()
99         else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))  in test_edges()
103             assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));  in test_edges()
105         else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))  in test_edges()
110         else if (!std::signbit(testcases[i].real()) && !std::signbit(testcases[i].imag()))  in test_edges()
115         else if (std::signbit(testcases[i].real()) && !std::signbit(testcases[i].imag()))  in test_edges()
120         else if (std::signbit(testcases[i].real()) && std::signbit(testcases[i].imag()))  in test_edges()
125         else if (!std::signbit(testcases[i].real()) && std::signbit(testcases[i].imag()))  in test_edges()