libcxx initial import
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/numerics/complex.number/complex.transcendentals/atanh.pass.cpp b/test/numerics/complex.number/complex.transcendentals/atanh.pass.cpp
new file mode 100644
index 0000000..c432810
--- /dev/null
+++ b/test/numerics/complex.number/complex.transcendentals/atanh.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+// complex<T>
+// atanh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+ assert(atanh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+ test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+ typedef std::complex<double> C;
+ const double pi = std::atan2(+0., -0.);
+ const unsigned N = sizeof(x) / sizeof(x[0]);
+ for (unsigned i = 0; i < N; ++i)
+ {
+ std::complex<double> r = atanh(x[i]);
+ if (x[i].real() == 0 && x[i].imag() == 0)
+ {
+ assert(std::signbit(r.real()) == std::signbit(x[i].real()));
+ assert(std::signbit(r.imag()) == std::signbit(x[i].imag()));
+ }
+ else if ( x[i].real() == 0 && std::isnan(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ assert(std::isnan(r.imag()));
+ }
+ else if (abs(x[i].real()) == 1 && x[i].imag() == 0)
+ {
+ assert(std::isinf(r.real()));
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ assert(r.imag() == 0);
+ assert(std::signbit(x[i].imag()) == std::signbit(r.imag()));
+ }
+ else if (std::isfinite(x[i].real()) && std::isinf(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ if (x[i].imag() > 0)
+ is_about(r.imag(), pi/2);
+ else
+ is_about(r.imag(), -pi/2);
+ }
+ else if (std::isfinite(x[i].real()) && std::isnan(x[i].imag()))
+ {
+ assert(std::isnan(r.real()));
+ assert(std::isnan(r.imag()));
+ }
+ else if (std::isinf(x[i].real()) && std::isfinite(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ if (std::signbit(x[i].imag()))
+ is_about(r.imag(), -pi/2);
+ else
+ is_about(r.imag(), pi/2);
+ }
+ else if (std::isinf(x[i].real()) && std::isinf(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ if (std::signbit(x[i].imag()))
+ is_about(r.imag(), -pi/2);
+ else
+ is_about(r.imag(), pi/2);
+ }
+ else if (std::isinf(x[i].real()) && std::isnan(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ assert(std::isnan(r.imag()));
+ }
+ else if (std::isnan(x[i].real()) && std::isfinite(x[i].imag()))
+ {
+ assert(std::isnan(r.real()));
+ assert(std::isnan(r.imag()));
+ }
+ else if (std::isnan(x[i].real()) && std::isinf(x[i].imag()))
+ {
+ assert(r.real() == 0);
+ assert(std::signbit(x[i].real()) == std::signbit(r.real()));
+ if (std::signbit(x[i].imag()))
+ is_about(r.imag(), -pi/2);
+ else
+ is_about(r.imag(), pi/2);
+ }
+ else if (std::isnan(x[i].real()) && std::isnan(x[i].imag()))
+ {
+ assert(std::isnan(r.real()));
+ assert(std::isnan(r.imag()));
+ }
+ else
+ {
+ assert(std::signbit(r.real()) == std::signbit(x[i].real()));
+ assert(std::signbit(r.imag()) == std::signbit(x[i].imag()));
+ }
+ }
+}
+
+int main()
+{
+ test<float>();
+ test<double>();
+ test<long double>();
+ test_edges();
+}