f642436cc2
AIX's system header provides these C++ overloads for compatibility with older XL C++ implementations, but they can be disabled by defining __LIBC_NO_CPP_MATH_OVERLOADS__ since AIX 7.2 TL 5 SP 3. Since D109078 landed clang will define this macro when using libc++ on AIX and we already run the lit tests with it too. This change will enable the overloads in libc++'s math.h and we'll continue to require the compiler to define the macro going forward. Reviewed By: ldionne, jsji, EricWF Differential Revision: https://reviews.llvm.org/D102172 co-authored-by: Jason Liu <jasonliu.development@gmail.com>
71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <complex>
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// template<class T>
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// complex<T>
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// pow(const T& x, const complex<T>& y);
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#include <complex>
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#include <cassert>
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#include "test_macros.h"
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#include "../cases.h"
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template <class T>
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void
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test(const T& a, const std::complex<T>& b, std::complex<T> x)
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{
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std::complex<T> c = pow(a, b);
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is_about(real(c), real(x));
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assert(std::abs(imag(c)) < 1.e-6);
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}
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template <class T>
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void
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test()
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{
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test(T(2), std::complex<T>(2), std::complex<T>(4));
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}
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void test_edges()
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{
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const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
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for (unsigned i = 0; i < N; ++i)
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{
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for (unsigned j = 0; j < N; ++j)
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{
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std::complex<double> r = pow(real(testcases[i]), testcases[j]);
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std::complex<double> z = exp(testcases[j] * log(std::complex<double>(real(testcases[i]))));
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if (std::isnan(real(r)))
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assert(std::isnan(real(z)));
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else
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{
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assert(real(r) == real(z));
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}
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if (std::isnan(imag(r)))
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assert(std::isnan(imag(z)));
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else
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{
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assert(imag(r) == imag(z));
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}
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}
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}
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}
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int main(int, char**)
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{
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test<float>();
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test<double>();
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test<long double>();
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test_edges();
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return 0;
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}
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