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diff --git a/test/std/numerics/complex.number/cases.h b/test/std/numerics/complex.number/cases.h
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+++ b/test/std/numerics/complex.number/cases.h
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+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// test cases
+
+#ifndef CASES_H
+#define CASES_H
+
+#include <complex>
+#include <cassert>
+
+std::complex<double> x[] =
+{
+ std::complex<double>( 1.e-6, 1.e-6),
+ std::complex<double>(-1.e-6, 1.e-6),
+ std::complex<double>(-1.e-6, -1.e-6),
+ std::complex<double>( 1.e-6, -1.e-6),
+
+ std::complex<double>( 1.e+6, 1.e-6),
+ std::complex<double>(-1.e+6, 1.e-6),
+ std::complex<double>(-1.e+6, -1.e-6),
+ std::complex<double>( 1.e+6, -1.e-6),
+
+ std::complex<double>( 1.e-6, 1.e+6),
+ std::complex<double>(-1.e-6, 1.e+6),
+ std::complex<double>(-1.e-6, -1.e+6),
+ std::complex<double>( 1.e-6, -1.e+6),
+
+ std::complex<double>( 1.e+6, 1.e+6),
+ std::complex<double>(-1.e+6, 1.e+6),
+ std::complex<double>(-1.e+6, -1.e+6),
+ std::complex<double>( 1.e+6, -1.e+6),
+
+ std::complex<double>(NAN, NAN),
+ std::complex<double>(-INFINITY, NAN),
+ std::complex<double>(-2, NAN),
+ std::complex<double>(-1, NAN),
+ std::complex<double>(-0.5, NAN),
+ std::complex<double>(-0., NAN),
+ std::complex<double>(+0., NAN),
+ std::complex<double>(0.5, NAN),
+ std::complex<double>(1, NAN),
+ std::complex<double>(2, NAN),
+ std::complex<double>(INFINITY, NAN),
+
+ std::complex<double>(NAN, -INFINITY),
+ std::complex<double>(-INFINITY, -INFINITY),
+ std::complex<double>(-2, -INFINITY),
+ std::complex<double>(-1, -INFINITY),
+ std::complex<double>(-0.5, -INFINITY),
+ std::complex<double>(-0., -INFINITY),
+ std::complex<double>(+0., -INFINITY),
+ std::complex<double>(0.5, -INFINITY),
+ std::complex<double>(1, -INFINITY),
+ std::complex<double>(2, -INFINITY),
+ std::complex<double>(INFINITY, -INFINITY),
+
+ std::complex<double>(NAN, -2),
+ std::complex<double>(-INFINITY, -2),
+ std::complex<double>(-2, -2),
+ std::complex<double>(-1, -2),
+ std::complex<double>(-0.5, -2),
+ std::complex<double>(-0., -2),
+ std::complex<double>(+0., -2),
+ std::complex<double>(0.5, -2),
+ std::complex<double>(1, -2),
+ std::complex<double>(2, -2),
+ std::complex<double>(INFINITY, -2),
+
+ std::complex<double>(NAN, -1),
+ std::complex<double>(-INFINITY, -1),
+ std::complex<double>(-2, -1),
+ std::complex<double>(-1, -1),
+ std::complex<double>(-0.5, -1),
+ std::complex<double>(-0., -1),
+ std::complex<double>(+0., -1),
+ std::complex<double>(0.5, -1),
+ std::complex<double>(1, -1),
+ std::complex<double>(2, -1),
+ std::complex<double>(INFINITY, -1),
+
+ std::complex<double>(NAN, -0.5),
+ std::complex<double>(-INFINITY, -0.5),
+ std::complex<double>(-2, -0.5),
+ std::complex<double>(-1, -0.5),
+ std::complex<double>(-0.5, -0.5),
+ std::complex<double>(-0., -0.5),
+ std::complex<double>(+0., -0.5),
+ std::complex<double>(0.5, -0.5),
+ std::complex<double>(1, -0.5),
+ std::complex<double>(2, -0.5),
+ std::complex<double>(INFINITY, -0.5),
+
+ std::complex<double>(NAN, -0.),
+ std::complex<double>(-INFINITY, -0.),
+ std::complex<double>(-2, -0.),
+ std::complex<double>(-1, -0.),
+ std::complex<double>(-0.5, -0.),
+ std::complex<double>(-0., -0.),
+ std::complex<double>(+0., -0.),
+ std::complex<double>(0.5, -0.),
+ std::complex<double>(1, -0.),
+ std::complex<double>(2, -0.),
+ std::complex<double>(INFINITY, -0.),
+
+ std::complex<double>(NAN, +0.),
+ std::complex<double>(-INFINITY, +0.),
+ std::complex<double>(-2, +0.),
+ std::complex<double>(-1, +0.),
+ std::complex<double>(-0.5, +0.),
+ std::complex<double>(-0., +0.),
+ std::complex<double>(+0., +0.),
+ std::complex<double>(0.5, +0.),
+ std::complex<double>(1, +0.),
+ std::complex<double>(2, +0.),
+ std::complex<double>(INFINITY, +0.),
+
+ std::complex<double>(NAN, 0.5),
+ std::complex<double>(-INFINITY, 0.5),
+ std::complex<double>(-2, 0.5),
+ std::complex<double>(-1, 0.5),
+ std::complex<double>(-0.5, 0.5),
+ std::complex<double>(-0., 0.5),
+ std::complex<double>(+0., 0.5),
+ std::complex<double>(0.5, 0.5),
+ std::complex<double>(1, 0.5),
+ std::complex<double>(2, 0.5),
+ std::complex<double>(INFINITY, 0.5),
+
+ std::complex<double>(NAN, 1),
+ std::complex<double>(-INFINITY, 1),
+ std::complex<double>(-2, 1),
+ std::complex<double>(-1, 1),
+ std::complex<double>(-0.5, 1),
+ std::complex<double>(-0., 1),
+ std::complex<double>(+0., 1),
+ std::complex<double>(0.5, 1),
+ std::complex<double>(1, 1),
+ std::complex<double>(2, 1),
+ std::complex<double>(INFINITY, 1),
+
+ std::complex<double>(NAN, 2),
+ std::complex<double>(-INFINITY, 2),
+ std::complex<double>(-2, 2),
+ std::complex<double>(-1, 2),
+ std::complex<double>(-0.5, 2),
+ std::complex<double>(-0., 2),
+ std::complex<double>(+0., 2),
+ std::complex<double>(0.5, 2),
+ std::complex<double>(1, 2),
+ std::complex<double>(2, 2),
+ std::complex<double>(INFINITY, 2),
+
+ std::complex<double>(NAN, INFINITY),
+ std::complex<double>(-INFINITY, INFINITY),
+ std::complex<double>(-2, INFINITY),
+ std::complex<double>(-1, INFINITY),
+ std::complex<double>(-0.5, INFINITY),
+ std::complex<double>(-0., INFINITY),
+ std::complex<double>(+0., INFINITY),
+ std::complex<double>(0.5, INFINITY),
+ std::complex<double>(1, INFINITY),
+ std::complex<double>(2, INFINITY),
+ std::complex<double>(INFINITY, INFINITY)
+};
+
+enum {zero, non_zero, inf, NaN, non_zero_nan};
+
+template <class T>
+int
+classify(const std::complex<T>& x)
+{
+ if (x == std::complex<T>())
+ return zero;
+ if (std::isinf(x.real()) || std::isinf(x.imag()))
+ return inf;
+ if (std::isnan(x.real()) && std::isnan(x.imag()))
+ return NaN;
+ if (std::isnan(x.real()))
+ {
+ if (x.imag() == T(0))
+ return NaN;
+ return non_zero_nan;
+ }
+ if (std::isnan(x.imag()))
+ {
+ if (x.real() == T(0))
+ return NaN;
+ return non_zero_nan;
+ }
+ return non_zero;
+}
+
+inline
+int
+classify(double x)
+{
+ if (x == 0)
+ return zero;
+ if (std::isinf(x))
+ return inf;
+ if (std::isnan(x))
+ return NaN;
+ return non_zero;
+}
+
+void is_about(float x, float y)
+{
+ assert(std::abs((x-y)/(x+y)) < 1.e-6);
+}
+
+void is_about(double x, double y)
+{
+ assert(std::abs((x-y)/(x+y)) < 1.e-14);
+}
+
+void is_about(long double x, long double y)
+{
+ assert(std::abs((x-y)/(x+y)) < 1.e-14);
+}
+
+#endif // CASES_H
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